Home / 47,517.20-71,279.64-12,456.75

Finding the Fourth Proportional to 47,517.20, 71,279.64 and 12,456.75

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Solution

The fourth proportional to 47,517.20, 71,279.64 and 12,456.75 is: 18,686.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,517.20 : 71,279.64 = 12,456.75 : x
  2. Step 2: Convert to fraction form
    47,517.20/71,279.64 = 12,456.75/x
  3. Step 3: Cross multiply
    47,517.20x = 71,279.64 × 12,456.75
  4. Step 4: Simplify right side
    47,517.20x = 887,912,655.57
  5. Step 5: Solve for x
    x = 887,912,655.57/47,517.20
  6. Step 6: Final answer
    x = 18,686.13

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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.