Finding the Fourth Proportional to 11,378,691.92, 15,701,305.20 and 6,732,619.40
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Solution
The fourth proportional to 11,378,691.92, 15,701,305.20 and 6,732,619.40 is: 9,290,251.70
Step by Step Solution
- Step 1: Write the proportion equation
11,378,691.92 : 15,701,305.20 = 6,732,619.40 : x - Step 2: Convert to fraction form
11,378,691.92/15,701,305.20 = 6,732,619.40/x - Step 3: Cross multiply
11,378,691.92x = 15,701,305.20 × 6,732,619.40 - Step 4: Simplify right side
11,378,691.92x = 105,710,911,994,840.88 - Step 5: Solve for x
x = 105,710,911,994,840.88/11,378,691.92 - Step 6: Final answer
x = 9,290,251.70
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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.