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Finding the Fourth Proportional to 18,241.70, 27,327.12 and 11,982.71

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Solution

The fourth proportional to 18,241.70, 27,327.12 and 11,982.71 is: 17,950.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,241.70 : 27,327.12 = 11,982.71 : x
  2. Step 2: Convert to fraction form
    18,241.70/27,327.12 = 11,982.71/x
  3. Step 3: Cross multiply
    18,241.70x = 27,327.12 × 11,982.71
  4. Step 4: Simplify right side
    18,241.70x = 327,452,817.46
  5. Step 5: Solve for x
    x = 327,452,817.46/18,241.70
  6. Step 6: Final answer
    x = 17,950.79

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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.