Finding the Fourth Proportional to 21,191,423.84, 31,791,874.17 and 7,728,251.84
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Solution
The fourth proportional to 21,191,423.84, 31,791,874.17 and 7,728,251.84 is: 11,594,105.80
Step by Step Solution
- Step 1: Write the proportion equation
21,191,423.84 : 31,791,874.17 = 7,728,251.84 : x - Step 2: Convert to fraction form
21,191,423.84/31,791,874.17 = 7,728,251.84/x - Step 3: Cross multiply
21,191,423.84x = 31,791,874.17 × 7,728,251.84 - Step 4: Simplify right side
21,191,423.84x = 245,695,610,051,350.97 - Step 5: Solve for x
x = 245,695,610,051,350.97/21,191,423.84 - Step 6: Final answer
x = 11,594,105.80
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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.