Question

What is the value of the fourth term in a geometric sequence for which a1 = 15 and r = 1/3? Express your answer as a fraction.

Answer 1

nth term = a1 r^(n-1)

so for example the third term =

a1r^2

ehere a1 = first term and r = common ratio

Answer 2

i got 5/9 is that right?

Answer 3

4th term = 15(1/3)^3
= 15 * 1/3^3
= 15/27
= 5/9

Answer 4

yes