Home / 11,381.28-15,704.61-6,344.90

Finding the Fourth Proportional to 11,381.28, 15,704.61 and 6,344.90

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Solution

The fourth proportional to 11,381.28, 15,704.61 and 6,344.90 is: 8,755.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,381.28 : 15,704.61 = 6,344.90 : x
  2. Step 2: Convert to fraction form
    11,381.28/15,704.61 = 6,344.90/x
  3. Step 3: Cross multiply
    11,381.28x = 15,704.61 × 6,344.90
  4. Step 4: Simplify right side
    11,381.28x = 99,644,101.47
  5. Step 5: Solve for x
    x = 99,644,101.47/11,381.28
  6. Step 6: Final answer
    x = 8,755.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.