Home / 11,974.28-17,939.52-8,679.20

Finding the Fourth Proportional to 11,974.28, 17,939.52 and 8,679.20

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Solution

The fourth proportional to 11,974.28, 17,939.52 and 8,679.20 is: 13,002.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,974.28 : 17,939.52 = 8,679.20 : x
  2. Step 2: Convert to fraction form
    11,974.28/17,939.52 = 8,679.20/x
  3. Step 3: Cross multiply
    11,974.28x = 17,939.52 × 8,679.20
  4. Step 4: Simplify right side
    11,974.28x = 155,700,592.29
  5. Step 5: Solve for x
    x = 155,700,592.29/11,974.28
  6. Step 6: Final answer
    x = 13,002.92

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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.