Home / 31,630.62-47,459.12-13,874.04

Finding the Fourth Proportional to 31,630.62, 47,459.12 and 13,874.04

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Solution

The fourth proportional to 31,630.62, 47,459.12 and 13,874.04 is: 20,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,630.62 : 47,459.12 = 13,874.04 : x
  2. Step 2: Convert to fraction form
    31,630.62/47,459.12 = 13,874.04/x
  3. Step 3: Cross multiply
    31,630.62x = 47,459.12 × 13,874.04
  4. Step 4: Simplify right side
    31,630.62x = 658,449,659.87
  5. Step 5: Solve for x
    x = 658,449,659.87/31,630.62
  6. Step 6: Final answer
    x = 20,816.85

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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.