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Finding the Fourth Proportional to 21,910.41, 32,874.12 and 8,766.54

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Solution

The fourth proportional to 21,910.41, 32,874.12 and 8,766.54 is: 13,153.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,910.41 : 32,874.12 = 8,766.54 : x
  2. Step 2: Convert to fraction form
    21,910.41/32,874.12 = 8,766.54/x
  3. Step 3: Cross multiply
    21,910.41x = 32,874.12 × 8,766.54
  4. Step 4: Simplify right side
    21,910.41x = 288,192,287.94
  5. Step 5: Solve for x
    x = 288,192,287.94/21,910.41
  6. Step 6: Final answer
    x = 13,153.21

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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.