Home / 18,286.62-27,450.09-13,115.58

Finding the Fourth Proportional to 18,286.62, 27,450.09 and 13,115.58

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Solution

The fourth proportional to 18,286.62, 27,450.09 and 13,115.58 is: 19,687.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.62 : 27,450.09 = 13,115.58 : x
  2. Step 2: Convert to fraction form
    18,286.62/27,450.09 = 13,115.58/x
  3. Step 3: Cross multiply
    18,286.62x = 27,450.09 × 13,115.58
  4. Step 4: Simplify right side
    18,286.62x = 360,023,851.40
  5. Step 5: Solve for x
    x = 360,023,851.40/18,286.62
  6. Step 6: Final answer
    x = 19,687.83

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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.