Home / 18,372.11-27,538.65-11,687.58

Finding the Fourth Proportional to 18,372.11, 27,538.65 and 11,687.58

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Solution

The fourth proportional to 18,372.11, 27,538.65 and 11,687.58 is: 17,518.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372.11 : 27,538.65 = 11,687.58 : x
  2. Step 2: Convert to fraction form
    18,372.11/27,538.65 = 11,687.58/x
  3. Step 3: Cross multiply
    18,372.11x = 27,538.65 × 11,687.58
  4. Step 4: Simplify right side
    18,372.11x = 321,860,174.97
  5. Step 5: Solve for x
    x = 321,860,174.97/18,372.11
  6. Step 6: Final answer
    x = 17,518.96

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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.