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Finding the Fourth Proportional to 18,600.60, 27,900.90 and 11,227.80

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Solution

The fourth proportional to 18,600.60, 27,900.90 and 11,227.80 is: 16,841.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,600.60 : 27,900.90 = 11,227.80 : x
  2. Step 2: Convert to fraction form
    18,600.60/27,900.90 = 11,227.80/x
  3. Step 3: Cross multiply
    18,600.60x = 27,900.90 × 11,227.80
  4. Step 4: Simplify right side
    18,600.60x = 313,265,725.02
  5. Step 5: Solve for x
    x = 313,265,725.02/18,600.60
  6. Step 6: Final answer
    x = 16,841.70

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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.