Home / 18,687.60-28,037.22-5,540.04

Finding the Fourth Proportional to 18,687.60, 28,037.22 and 5,540.04

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Solution

The fourth proportional to 18,687.60, 28,037.22 and 5,540.04 is: 8,311.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.60 : 28,037.22 = 5,540.04 : x
  2. Step 2: Convert to fraction form
    18,687.60/28,037.22 = 5,540.04/x
  3. Step 3: Cross multiply
    18,687.60x = 28,037.22 × 5,540.04
  4. Step 4: Simplify right side
    18,687.60x = 155,327,320.29
  5. Step 5: Solve for x
    x = 155,327,320.29/18,687.60
  6. Step 6: Final answer
    x = 8,311.79

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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.