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Let's say I have a number, 10, and over a period of a year that number has increased by 100% to 20. I would like to figure out what the monthly increase should be for 10 to reach 20 over 12 months.

If I convert 100% to a coefficient I get 2. Now by trying several numbers manually I figured the monthly coefficient should be around 1.065:

M.  NUMBER          COEFF 1   10              1.065 2   10.65           1.065 3   11.34225        1.065 4   12.07949625     1.065 5   12.8646635063   1.065 6   13.7008666342   1.065 7   14.5914229654   1.065 8   15.5398654581   1.065 9   16.5499567129   1.065 10  17.6257038992   1.065 11  18.7713746527   1.065 12  19.9915140051   1.065 

Q: How can I obtain the monthly coefficient (something around 1.065) from 2 and 12?

4 Answers 4