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Compounded Rate
I need to have a formula which solves what the constant rate of increase per
year was to obtain a figure. I know the % increase from base yr to end yr was 28.08%. I now need to know what % (constant) was needed to increase each year to get to the end figure. Make sense? |
Compounded Rate
=((final_value / initial_value) ^ (1/number_of_years)) - 1
Ex ((12808/10000) ^ (1/3) - 1 = 8.6% "GatorGirl" wrote: I need to have a formula which solves what the constant rate of increase per year was to obtain a figure. I know the % increase from base yr to end yr was 28.08%. I now need to know what % (constant) was needed to increase each year to get to the end figure. Make sense? |
Compounded Rate
=(1+28.08%)^(1/n)
where n is the number of years to give 28.08% -- David Biddulph "GatorGirl" wrote in message ... I need to have a formula which solves what the constant rate of increase per year was to obtain a figure. I know the % increase from base yr to end yr was 28.08%. I now need to know what % (constant) was needed to increase each year to get to the end figure. Make sense? |
Compounded Rate
-1, of course:
=(1+28.08%)^(1/n) -1 -- David Biddulph "David Biddulph" <groups [at] biddulph.org.uk wrote in message ... =(1+28.08%)^(1/n) where n is the number of years to give 28.08% "GatorGirl" wrote in message ... I need to have a formula which solves what the constant rate of increase per year was to obtain a figure. I know the % increase from base yr to end yr was 28.08%. I now need to know what % (constant) was needed to increase each year to get to the end figure. Make sense? |
Compounded Rate
On Mar 7, 12:54 pm, GatorGirl
wrote: I know the % increase from base yr to end yr was 28.08%. I now need to know what % (constant) was needed to increase each year to get to the end figure. =rate(n, 0, -1, 1+28.08%) where n is the number of years. Becoming familiar with the basic financial functions can help you when you need to solve more complex problems (e.g. you made an annual contribution). |
Compounded Rate
PS....
On Mar 7, 3:02 pm, "joeu2004" wrote: =rate(n, 0, -1, 1+28.08%) I should have noted that Excel's RATE() implementation is unreliable insofar as it sometimes fails unless you can provide a good "guess" argument. So in this simple case, if you are comfortable with the exponential formulation, it is certainly more efficient and arguably more reliable. I offered the RATE() solution merely as an alternative for your consideration. Some people prefer to use the financial functions because of their similarity to functions on business calculators. |
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