Home / 15,821.28-23,731.92-5,432.96

Finding the Fourth Proportional to 15,821.28, 23,731.92 and 5,432.96

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Solution

The fourth proportional to 15,821.28, 23,731.92 and 5,432.96 is: 8,149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.28 : 23,731.92 = 5,432.96 : x
  2. Step 2: Convert to fraction form
    15,821.28/23,731.92 = 5,432.96/x
  3. Step 3: Cross multiply
    15,821.28x = 23,731.92 × 5,432.96
  4. Step 4: Simplify right side
    15,821.28x = 128,934,572.08
  5. Step 5: Solve for x
    x = 128,934,572.08/15,821.28
  6. Step 6: Final answer
    x = 8,149.44

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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.