Answers

2016-07-18T19:51:21+08:00
You just have to find this using the geometric sequence formula, so : 
 
             a_{n}=a_{1}r^{n-1}
             4=-32r^{4-1}
             4=-32r^3
              \frac{4}{-32} = \frac{-32r^3}{-32}
             - \frac{1}{8}=r^3
              -\frac{1}{2}=r

the common ratio is -\frac{1}{2} so,
  
             -32, 16, -8, 4

The two geometric means between -32 and 4 is 16, and -8.
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