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Finding the Fourth Proportional to 21,909.55, 32,836.86 and 9,414.73

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Solution

The fourth proportional to 21,909.55, 32,836.86 and 9,414.73 is: 14,110.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,909.55 : 32,836.86 = 9,414.73 : x
  2. Step 2: Convert to fraction form
    21,909.55/32,836.86 = 9,414.73/x
  3. Step 3: Cross multiply
    21,909.55x = 32,836.86 × 9,414.73
  4. Step 4: Simplify right side
    21,909.55x = 309,150,170.95
  5. Step 5: Solve for x
    x = 309,150,170.95/21,909.55
  6. Step 6: Final answer
    x = 14,110.29

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1.5x scale

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.