Home / 11,951.40-17,931.92-5,380.68

Finding the Fourth Proportional to 11,951.40, 17,931.92 and 5,380.68

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Solution

The fourth proportional to 11,951.40, 17,931.92 and 5,380.68 is: 8,073.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,951.40 : 17,931.92 = 5,380.68 : x
  2. Step 2: Convert to fraction form
    11,951.40/17,931.92 = 5,380.68/x
  3. Step 3: Cross multiply
    11,951.40x = 17,931.92 × 5,380.68
  4. Step 4: Simplify right side
    11,951.40x = 96,485,896.40
  5. Step 5: Solve for x
    x = 96,485,896.40/11,951.40
  6. Step 6: Final answer
    x = 8,073.19

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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.