Home / 18,537.20-27,808.50-5,387.87

Finding the Fourth Proportional to 18,537.20, 27,808.50 and 5,387.87

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Solution

The fourth proportional to 18,537.20, 27,808.50 and 5,387.87 is: 8,082.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,537.20 : 27,808.50 = 5,387.87 : x
  2. Step 2: Convert to fraction form
    18,537.20/27,808.50 = 5,387.87/x
  3. Step 3: Cross multiply
    18,537.20x = 27,808.50 × 5,387.87
  4. Step 4: Simplify right side
    18,537.20x = 149,828,443.85
  5. Step 5: Solve for x
    x = 149,828,443.85/18,537.20
  6. Step 6: Final answer
    x = 8,082.58

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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.