Finding the Fourth Proportional to 18,452,115.70, 27,678,173.55 and 7,665,831.70
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Solution
The fourth proportional to 18,452,115.70, 27,678,173.55 and 7,665,831.70 is: 11,498,747.55
Step by Step Solution
- Step 1: Write the proportion equation
18,452,115.70 : 27,678,173.55 = 7,665,831.70 : x - Step 2: Convert to fraction form
18,452,115.70/27,678,173.55 = 7,665,831.70/x - Step 3: Cross multiply
18,452,115.70x = 27,678,173.55 × 7,665,831.70 - Step 4: Simplify right side
18,452,115.70x = 212,176,220,197,691.53 - Step 5: Solve for x
x = 212,176,220,197,691.53/18,452,115.70 - Step 6: Final answer
x = 11,498,747.55
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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.