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Finding the Fourth Proportional to 18,122.98, 27,144.30 and 13,932.16

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Solution

The fourth proportional to 18,122.98, 27,144.30 and 13,932.16 is: 20,867.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.98 : 27,144.30 = 13,932.16 : x
  2. Step 2: Convert to fraction form
    18,122.98/27,144.30 = 13,932.16/x
  3. Step 3: Cross multiply
    18,122.98x = 27,144.30 × 13,932.16
  4. Step 4: Simplify right side
    18,122.98x = 378,178,730.69
  5. Step 5: Solve for x
    x = 378,178,730.69/18,122.98
  6. Step 6: Final answer
    x = 20,867.36

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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.