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Finding the Fourth Proportional to 18,332.52, 27,503.43 and 8,478.87

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Solution

The fourth proportional to 18,332.52, 27,503.43 and 8,478.87 is: 12,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,332.52 : 27,503.43 = 8,478.87 : x
  2. Step 2: Convert to fraction form
    18,332.52/27,503.43 = 8,478.87/x
  3. Step 3: Cross multiply
    18,332.52x = 27,503.43 × 8,478.87
  4. Step 4: Simplify right side
    18,332.52x = 233,198,007.52
  5. Step 5: Solve for x
    x = 233,198,007.52/18,332.52
  6. Step 6: Final answer
    x = 12,720.46

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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.