Home / 13,470.43-20,200.79-5,679.85

Finding the Fourth Proportional to 13,470.43, 20,200.79 and 5,679.85

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Solution

The fourth proportional to 13,470.43, 20,200.79 and 5,679.85 is: 8,517.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.43 : 20,200.79 = 5,679.85 : x
  2. Step 2: Convert to fraction form
    13,470.43/20,200.79 = 5,679.85/x
  3. Step 3: Cross multiply
    13,470.43x = 20,200.79 × 5,679.85
  4. Step 4: Simplify right side
    13,470.43x = 114,737,493.38
  5. Step 5: Solve for x
    x = 114,737,493.38/13,470.43
  6. Step 6: Final answer
    x = 8,517.73

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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.