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Finding the Fourth Proportional to 18,241.10, 27,378.70 and 11,234.78

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Solution

The fourth proportional to 18,241.10, 27,378.70 and 11,234.78 is: 16,862.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,241.10 : 27,378.70 = 11,234.78 : x
  2. Step 2: Convert to fraction form
    18,241.10/27,378.70 = 11,234.78/x
  3. Step 3: Cross multiply
    18,241.10x = 27,378.70 × 11,234.78
  4. Step 4: Simplify right side
    18,241.10x = 307,593,516.07
  5. Step 5: Solve for x
    x = 307,593,516.07/18,241.10
  6. Step 6: Final answer
    x = 16,862.66

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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.