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Finding the Fourth Proportional to 18,098.37, 27,089.10 and 9,321.21

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Solution

The fourth proportional to 18,098.37, 27,089.10 and 9,321.21 is: 13,951.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,098.37 : 27,089.10 = 9,321.21 : x
  2. Step 2: Convert to fraction form
    18,098.37/27,089.10 = 9,321.21/x
  3. Step 3: Cross multiply
    18,098.37x = 27,089.10 × 9,321.21
  4. Step 4: Simplify right side
    18,098.37x = 252,503,189.81
  5. Step 5: Solve for x
    x = 252,503,189.81/18,098.37
  6. Step 6: Final answer
    x = 13,951.71

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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.