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Finding the Fourth Proportional to 11,190.29, 15,443 and 6,154.90

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Solution

The fourth proportional to 11,190.29, 15,443 and 6,154.90 is: 8,493.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.29 : 15,443 = 6,154.90 : x
  2. Step 2: Convert to fraction form
    11,190.29/15,443 = 6,154.90/x
  3. Step 3: Cross multiply
    11,190.29x = 15,443 × 6,154.90
  4. Step 4: Simplify right side
    11,190.29x = 95,050,120.70
  5. Step 5: Solve for x
    x = 95,050,120.70/11,190.29
  6. Step 6: Final answer
    x = 8,493.98

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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.