Home / 20,792.43-31,169.20-7,641.27

Finding the Fourth Proportional to 20,792.43, 31,169.20 and 7,641.27

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Solution

The fourth proportional to 20,792.43, 31,169.20 and 7,641.27 is: 11,454.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.43 : 31,169.20 = 7,641.27 : x
  2. Step 2: Convert to fraction form
    20,792.43/31,169.20 = 7,641.27/x
  3. Step 3: Cross multiply
    20,792.43x = 31,169.20 × 7,641.27
  4. Step 4: Simplify right side
    20,792.43x = 238,172,272.88
  5. Step 5: Solve for x
    x = 238,172,272.88/20,792.43
  6. Step 6: Final answer
    x = 11,454.76

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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.