Home / 18,320.43-27,488.07-12,079.38

Finding the Fourth Proportional to 18,320.43, 27,488.07 and 12,079.38

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Solution

The fourth proportional to 18,320.43, 27,488.07 and 12,079.38 is: 18,123.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.43 : 27,488.07 = 12,079.38 : x
  2. Step 2: Convert to fraction form
    18,320.43/27,488.07 = 12,079.38/x
  3. Step 3: Cross multiply
    18,320.43x = 27,488.07 × 12,079.38
  4. Step 4: Simplify right side
    18,320.43x = 332,038,843.00
  5. Step 5: Solve for x
    x = 332,038,843.00/18,320.43
  6. Step 6: Final answer
    x = 18,123.97

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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.