Home / 47,428.38-71,142.56-12,367.92

Finding the Fourth Proportional to 47,428.38, 71,142.56 and 12,367.92

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Solution

The fourth proportional to 47,428.38, 71,142.56 and 12,367.92 is: 18,551.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,428.38 : 71,142.56 = 12,367.92 : x
  2. Step 2: Convert to fraction form
    47,428.38/71,142.56 = 12,367.92/x
  3. Step 3: Cross multiply
    47,428.38x = 71,142.56 × 12,367.92
  4. Step 4: Simplify right side
    47,428.38x = 879,885,490.68
  5. Step 5: Solve for x
    x = 879,885,490.68/47,428.38
  6. Step 6: Final answer
    x = 18,551.88

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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.