Home / 19,640.16-29,456.12-6,489.52

Finding the Fourth Proportional to 19,640.16, 29,456.12 and 6,489.52

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Solution

The fourth proportional to 19,640.16, 29,456.12 and 6,489.52 is: 9,732.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640.16 : 29,456.12 = 6,489.52 : x
  2. Step 2: Convert to fraction form
    19,640.16/29,456.12 = 6,489.52/x
  3. Step 3: Cross multiply
    19,640.16x = 29,456.12 × 6,489.52
  4. Step 4: Simplify right side
    19,640.16x = 191,156,079.86
  5. Step 5: Solve for x
    x = 191,156,079.86/19,640.16
  6. Step 6: Final answer
    x = 9,732.92

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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.