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Finding the Fourth Proportional to 18,062.28, 27,049.32 and 12,499.92

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Solution

The fourth proportional to 18,062.28, 27,049.32 and 12,499.92 is: 18,719.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,062.28 : 27,049.32 = 12,499.92 : x
  2. Step 2: Convert to fraction form
    18,062.28/27,049.32 = 12,499.92/x
  3. Step 3: Cross multiply
    18,062.28x = 27,049.32 × 12,499.92
  4. Step 4: Simplify right side
    18,062.28x = 338,114,336.05
  5. Step 5: Solve for x
    x = 338,114,336.05/18,062.28
  6. Step 6: Final answer
    x = 18,719.36

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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.