SOLUTION: number pattern problem: 12,-4,4/3,-4/9,... Find the next two

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Question 21832: number pattern problem:
12,-4,4/3,-4/9,...
Find the next two
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
The pattern to find the next number is to divide a given number by -3, or perhaps it would be better to think of multiplying by -1%2F3. This is called a Geometric Progression (or Series), where there is a common ratio from one number to the next.
12%2A%28-1%2F3%29+=+-4

%28-4%29%2A%28-1%2F3%29=+4%2F3

%284%2F3%29%2A%28-1%2F3%29+=+-4%2F9

+%28-4%2F9%29%2A%28-1%2F3%29+=+4%2F27

+%284%2F27%29%2A%28-1%2F3%29+=+-4%2F81+

R^2 at SCC