Find the rate of interest required to achieve the conditions set forth: a = $5000; p = $1250; t = 12 years; interest is compounded quarterly.

The Formula for the compound interest is:



A = Amount Accumulated = $5000
P = Principal Amount = $1250
n = compound period in a year = 4
r = Interest Rate
t = Time in years = 12

Using the values in the formula, we get:



Thus, in order to achieve the given conditions, 11.72% interest rate is required.