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Finding the Fourth Proportional to 18,114.66, 24,974.84 and 11,729.90

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Solution

The fourth proportional to 18,114.66, 24,974.84 and 11,729.90 is: 16,172.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,114.66 : 24,974.84 = 11,729.90 : x
  2. Step 2: Convert to fraction form
    18,114.66/24,974.84 = 11,729.90/x
  3. Step 3: Cross multiply
    18,114.66x = 24,974.84 × 11,729.90
  4. Step 4: Simplify right side
    18,114.66x = 292,952,375.72
  5. Step 5: Solve for x
    x = 292,952,375.72/18,114.66
  6. Step 6: Final answer
    x = 16,172.12

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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.