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Finding the Fourth Proportional to 18,625.61, 27,932.41 and 6,142.73

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Solution

The fourth proportional to 18,625.61, 27,932.41 and 6,142.73 is: 9,212.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,625.61 : 27,932.41 = 6,142.73 : x
  2. Step 2: Convert to fraction form
    18,625.61/27,932.41 = 6,142.73/x
  3. Step 3: Cross multiply
    18,625.61x = 27,932.41 × 6,142.73
  4. Step 4: Simplify right side
    18,625.61x = 171,581,252.88
  5. Step 5: Solve for x
    x = 171,581,252.88/18,625.61
  6. Step 6: Final answer
    x = 9,212.11

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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.