Home / 13,711.20-20,572.29-5,393.31

Finding the Fourth Proportional to 13,711.20, 20,572.29 and 5,393.31

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Solution

The fourth proportional to 13,711.20, 20,572.29 and 5,393.31 is: 8,092.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.20 : 20,572.29 = 5,393.31 : x
  2. Step 2: Convert to fraction form
    13,711.20/20,572.29 = 5,393.31/x
  3. Step 3: Cross multiply
    13,711.20x = 20,572.29 × 5,393.31
  4. Step 4: Simplify right side
    13,711.20x = 110,952,737.38
  5. Step 5: Solve for x
    x = 110,952,737.38/13,711.20
  6. Step 6: Final answer
    x = 8,092.12

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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.