Home / 18,890.38-28,337.16-5,742.87

Finding the Fourth Proportional to 18,890.38, 28,337.16 and 5,742.87

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Solution

The fourth proportional to 18,890.38, 28,337.16 and 5,742.87 is: 8,614.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.38 : 28,337.16 = 5,742.87 : x
  2. Step 2: Convert to fraction form
    18,890.38/28,337.16 = 5,742.87/x
  3. Step 3: Cross multiply
    18,890.38x = 28,337.16 × 5,742.87
  4. Step 4: Simplify right side
    18,890.38x = 162,736,509.02
  5. Step 5: Solve for x
    x = 162,736,509.02/18,890.38
  6. Step 6: Final answer
    x = 8,614.78

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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.