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Finding the Fourth Proportional to 18,882.60, 28,324.95 and 6,231.86

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Solution

The fourth proportional to 18,882.60, 28,324.95 and 6,231.86 is: 9,348.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.60 : 28,324.95 = 6,231.86 : x
  2. Step 2: Convert to fraction form
    18,882.60/28,324.95 = 6,231.86/x
  3. Step 3: Cross multiply
    18,882.60x = 28,324.95 × 6,231.86
  4. Step 4: Simplify right side
    18,882.60x = 176,517,064.13
  5. Step 5: Solve for x
    x = 176,517,064.13/18,882.60
  6. Step 6: Final answer
    x = 9,348.14

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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.