Home / 11,981.28-17,971.92-3,773.28

Finding the Fourth Proportional to 11,981.28, 17,971.92 and 3,773.28

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Solution

The fourth proportional to 11,981.28, 17,971.92 and 3,773.28 is: 5,659.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.28 : 17,971.92 = 3,773.28 : x
  2. Step 2: Convert to fraction form
    11,981.28/17,971.92 = 3,773.28/x
  3. Step 3: Cross multiply
    11,981.28x = 17,971.92 × 3,773.28
  4. Step 4: Simplify right side
    11,981.28x = 67,813,086.30
  5. Step 5: Solve for x
    x = 67,813,086.30/11,981.28
  6. Step 6: Final answer
    x = 5,659.92

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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.