Finding the Fourth Proportional to 19,872,117.20, 29,771,434.20 and 11,327,070.80
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Solution
The fourth proportional to 19,872,117.20, 29,771,434.20 and 11,327,070.80 is: 16,969,663.55
Step by Step Solution
- Step 1: Write the proportion equation
19,872,117.20 : 29,771,434.20 = 11,327,070.80 : x - Step 2: Convert to fraction form
19,872,117.20/29,771,434.20 = 11,327,070.80/x - Step 3: Cross multiply
19,872,117.20x = 29,771,434.20 × 11,327,070.80 - Step 4: Simplify right side
19,872,117.20x = 337,223,143,000,941.38 - Step 5: Solve for x
x = 337,223,143,000,941.38/19,872,117.20 - Step 6: Final answer
x = 16,969,663.55
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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.