Home / 18,608.05-27,921.57-12,372.31

Finding the Fourth Proportional to 18,608.05, 27,921.57 and 12,372.31

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Solution

The fourth proportional to 18,608.05, 27,921.57 and 12,372.31 is: 18,564.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,608.05 : 27,921.57 = 12,372.31 : x
  2. Step 2: Convert to fraction form
    18,608.05/27,921.57 = 12,372.31/x
  3. Step 3: Cross multiply
    18,608.05x = 27,921.57 × 12,372.31
  4. Step 4: Simplify right side
    18,608.05x = 345,454,319.73
  5. Step 5: Solve for x
    x = 345,454,319.73/18,608.05
  6. Step 6: Final answer
    x = 18,564.78

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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.