Home / 21,766.76-32,646.18-9,917.78

Finding the Fourth Proportional to 21,766.76, 32,646.18 and 9,917.78

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Solution

The fourth proportional to 21,766.76, 32,646.18 and 9,917.78 is: 14,874.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,766.76 : 32,646.18 = 9,917.78 : x
  2. Step 2: Convert to fraction form
    21,766.76/32,646.18 = 9,917.78/x
  3. Step 3: Cross multiply
    21,766.76x = 32,646.18 × 9,917.78
  4. Step 4: Simplify right side
    21,766.76x = 323,777,631.08
  5. Step 5: Solve for x
    x = 323,777,631.08/21,766.76
  6. Step 6: Final answer
    x = 14,874.87

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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.