Home / 20,439,897.28-30,644,711.82-12,350,978.92

Finding the Fourth Proportional to 20,439,897.28, 30,644,711.82 and 12,350,978.92

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Solution

The fourth proportional to 20,439,897.28, 30,644,711.82 and 12,350,978.92 is: 18,517,323.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439,897.28 : 30,644,711.82 = 12,350,978.92 : x
  2. Step 2: Convert to fraction form
    20,439,897.28/30,644,711.82 = 12,350,978.92/x
  3. Step 3: Cross multiply
    20,439,897.28x = 30,644,711.82 × 12,350,978.92
  4. Step 4: Simplify right side
    20,439,897.28x = 378,492,189,698,294.81
  5. Step 5: Solve for x
    x = 378,492,189,698,294.81/20,439,897.28
  6. Step 6: Final answer
    x = 18,517,323.47

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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.