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Finding the Fourth Proportional to 18,638.91, 27,932.00 and 10,322.73

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Solution

The fourth proportional to 18,638.91, 27,932.00 and 10,322.73 is: 15,469.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.91 : 27,932.00 = 10,322.73 : x
  2. Step 2: Convert to fraction form
    18,638.91/27,932.00 = 10,322.73/x
  3. Step 3: Cross multiply
    18,638.91x = 27,932.00 × 10,322.73
  4. Step 4: Simplify right side
    18,638.91x = 288,334,442.75
  5. Step 5: Solve for x
    x = 288,334,442.75/18,638.91
  6. Step 6: Final answer
    x = 15,469.49

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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.