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Finding the Fourth Proportional to 18,147.20, 27,187.20 and 10,332.80

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Solution

The fourth proportional to 18,147.20, 27,187.20 and 10,332.80 is: 15,480.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,147.20 : 27,187.20 = 10,332.80 : x
  2. Step 2: Convert to fraction form
    18,147.20/27,187.20 = 10,332.80/x
  3. Step 3: Cross multiply
    18,147.20x = 27,187.20 × 10,332.80
  4. Step 4: Simplify right side
    18,147.20x = 280,919,900.16
  5. Step 5: Solve for x
    x = 280,919,900.16/18,147.20
  6. Step 6: Final answer
    x = 15,480.07

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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.