Finding the Fourth Proportional to 15,081,263.79, 20,811,531.18 and 8,554,753.14
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Solution
The fourth proportional to 15,081,263.79, 20,811,531.18 and 8,554,753.14 is: 11,805,211.70
Step by Step Solution
- Step 1: Write the proportion equation
15,081,263.79 : 20,811,531.18 = 8,554,753.14 : x - Step 2: Convert to fraction form
15,081,263.79/20,811,531.18 = 8,554,753.14/x - Step 3: Cross multiply
15,081,263.79x = 20,811,531.18 × 8,554,753.14 - Step 4: Simplify right side
15,081,263.79x = 178,037,511,710,312.91 - Step 5: Solve for x
x = 178,037,511,710,312.91/15,081,263.79 - Step 6: Final answer
x = 11,805,211.70
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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.