Home / 18,286.38-27,429.69-5,139

Finding the Fourth Proportional to 18,286.38, 27,429.69 and 5,139

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Solution

The fourth proportional to 18,286.38, 27,429.69 and 5,139 is: 7,708.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.38 : 27,429.69 = 5,139 : x
  2. Step 2: Convert to fraction form
    18,286.38/27,429.69 = 5,139/x
  3. Step 3: Cross multiply
    18,286.38x = 27,429.69 × 5,139
  4. Step 4: Simplify right side
    18,286.38x = 140,961,176.91
  5. Step 5: Solve for x
    x = 140,961,176.91/18,286.38
  6. Step 6: Final answer
    x = 7,708.53

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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.