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Finding the Fourth Proportional to 11,151.70, 16,729.80 and 3,254.20

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Solution

The fourth proportional to 11,151.70, 16,729.80 and 3,254.20 is: 4,881.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.70 : 16,729.80 = 3,254.20 : x
  2. Step 2: Convert to fraction form
    11,151.70/16,729.80 = 3,254.20/x
  3. Step 3: Cross multiply
    11,151.70x = 16,729.80 × 3,254.20
  4. Step 4: Simplify right side
    11,151.70x = 54,442,115.16
  5. Step 5: Solve for x
    x = 54,442,115.16/11,151.70
  6. Step 6: Final answer
    x = 4,881.96

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1.5x scale

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.