The seventh term of a geometric sequence is 5 and the tenth term is 16.875.Find the fifteenth term of this sequence.
5 = F * R^6,
16.875 =F * R^9, solve for F, R
F =320 / 729 - This is the first term
R =3 / 2 - This is the common ratio
15th term =320 / 729 * (3/2)^14 =32805 / 256
