Home / 11,408.20-15,742.92-6,372.38

Finding the Fourth Proportional to 11,408.20, 15,742.92 and 6,372.38

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Solution

The fourth proportional to 11,408.20, 15,742.92 and 6,372.38 is: 8,793.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,408.20 : 15,742.92 = 6,372.38 : x
  2. Step 2: Convert to fraction form
    11,408.20/15,742.92 = 6,372.38/x
  3. Step 3: Cross multiply
    11,408.20x = 15,742.92 × 6,372.38
  4. Step 4: Simplify right side
    11,408.20x = 100,319,868.55
  5. Step 5: Solve for x
    x = 100,319,868.55/11,408.20
  6. Step 6: Final answer
    x = 8,793.66

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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.