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Finding the Fourth Proportional to 18,084.70, 27,110.85 and 11,847.70

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Solution

The fourth proportional to 18,084.70, 27,110.85 and 11,847.70 is: 17,760.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,084.70 : 27,110.85 = 11,847.70 : x
  2. Step 2: Convert to fraction form
    18,084.70/27,110.85 = 11,847.70/x
  3. Step 3: Cross multiply
    18,084.70x = 27,110.85 × 11,847.70
  4. Step 4: Simplify right side
    18,084.70x = 321,201,217.55
  5. Step 5: Solve for x
    x = 321,201,217.55/18,084.70
  6. Step 6: Final answer
    x = 17,760.94

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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.