Home / 43,311.60-64,961.91-13,729.68

Finding the Fourth Proportional to 43,311.60, 64,961.91 and 13,729.68

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Solution

The fourth proportional to 43,311.60, 64,961.91 and 13,729.68 is: 20,592.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,311.60 : 64,961.91 = 13,729.68 : x
  2. Step 2: Convert to fraction form
    43,311.60/64,961.91 = 13,729.68/x
  3. Step 3: Cross multiply
    43,311.60x = 64,961.91 × 13,729.68
  4. Step 4: Simplify right side
    43,311.60x = 891,906,236.49
  5. Step 5: Solve for x
    x = 891,906,236.49/43,311.60
  6. Step 6: Final answer
    x = 20,592.78

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1.5x scale

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.