Finding the Fourth Proportional to 19,493,397.88, 29,256,892.96 and 13,513,964.92
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Solution
The fourth proportional to 19,493,397.88, 29,256,892.96 and 13,513,964.92 is: 20,282,591.45
Step by Step Solution
- Step 1: Write the proportion equation
19,493,397.88 : 29,256,892.96 = 13,513,964.92 : x - Step 2: Convert to fraction form
19,493,397.88/29,256,892.96 = 13,513,964.92/x - Step 3: Cross multiply
19,493,397.88x = 29,256,892.96 × 13,513,964.92 - Step 4: Simplify right side
19,493,397.88x = 395,376,625,129,635 - Step 5: Solve for x
x = 395,376,625,129,635/19,493,397.88 - Step 6: Final answer
x = 20,282,591.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.