Finding the Fourth Proportional to 21,718,655.38, 29,976,964.06 and 12,431,609.68
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Solution
The fourth proportional to 21,718,655.38, 29,976,964.06 and 12,431,609.68 is: 17,158,609.04
Step by Step Solution
- Step 1: Write the proportion equation
21,718,655.38 : 29,976,964.06 = 12,431,609.68 : x - Step 2: Convert to fraction form
21,718,655.38/29,976,964.06 = 12,431,609.68/x - Step 3: Cross multiply
21,718,655.38x = 29,976,964.06 × 12,431,609.68 - Step 4: Simplify right side
21,718,655.38x = 372,661,916,585,308.06 - Step 5: Solve for x
x = 372,661,916,585,308.06/21,718,655.38 - Step 6: Final answer
x = 17,158,609.04
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.