Home / 21,390.27-32,082.17-8,240.73

Finding the Fourth Proportional to 21,390.27, 32,082.17 and 8,240.73

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Solution

The fourth proportional to 21,390.27, 32,082.17 and 8,240.73 is: 12,359.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,390.27 : 32,082.17 = 8,240.73 : x
  2. Step 2: Convert to fraction form
    21,390.27/32,082.17 = 8,240.73/x
  3. Step 3: Cross multiply
    21,390.27x = 32,082.17 × 8,240.73
  4. Step 4: Simplify right side
    21,390.27x = 264,380,459.58
  5. Step 5: Solve for x
    x = 264,380,459.58/21,390.27
  6. Step 6: Final answer
    x = 12,359.85

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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.