Home / 39,129.60-58,694.28-13,847.88

Finding the Fourth Proportional to 39,129.60, 58,694.28 and 13,847.88

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Solution

The fourth proportional to 39,129.60, 58,694.28 and 13,847.88 is: 20,771.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,129.60 : 58,694.28 = 13,847.88 : x
  2. Step 2: Convert to fraction form
    39,129.60/58,694.28 = 13,847.88/x
  3. Step 3: Cross multiply
    39,129.60x = 58,694.28 × 13,847.88
  4. Step 4: Simplify right side
    39,129.60x = 812,791,346.13
  5. Step 5: Solve for x
    x = 812,791,346.13/39,129.60
  6. Step 6: Final answer
    x = 20,771.78

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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.