Finding the Fourth Proportional to 10,207,497.70, 15,311,246.55 and 8,666,318.80
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Solution
The fourth proportional to 10,207,497.70, 15,311,246.55 and 8,666,318.80 is: 12,999,478.20
Step by Step Solution
- Step 1: Write the proportion equation
10,207,497.70 : 15,311,246.55 = 8,666,318.80 : x - Step 2: Convert to fraction form
10,207,497.70/15,311,246.55 = 8,666,318.80/x - Step 3: Cross multiply
10,207,497.70x = 15,311,246.55 × 8,666,318.80 - Step 4: Simplify right side
10,207,497.70x = 132,692,143,827,700.16 - Step 5: Solve for x
x = 132,692,143,827,700.16/10,207,497.70 - Step 6: Final answer
x = 12,999,478.20
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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.