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Finding the Fourth Proportional to 18,404.92, 27,607.38 and 12,163.47

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Solution

The fourth proportional to 18,404.92, 27,607.38 and 12,163.47 is: 18,245.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.92 : 27,607.38 = 12,163.47 : x
  2. Step 2: Convert to fraction form
    18,404.92/27,607.38 = 12,163.47/x
  3. Step 3: Cross multiply
    18,404.92x = 27,607.38 × 12,163.47
  4. Step 4: Simplify right side
    18,404.92x = 335,801,538.41
  5. Step 5: Solve for x
    x = 335,801,538.41/18,404.92
  6. Step 6: Final answer
    x = 18,245.21

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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.