Home / 16,814.38-25,225.35-5,128.78

Finding the Fourth Proportional to 16,814.38, 25,225.35 and 5,128.78

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Solution

The fourth proportional to 16,814.38, 25,225.35 and 5,128.78 is: 7,694.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,814.38 : 25,225.35 = 5,128.78 : x
  2. Step 2: Convert to fraction form
    16,814.38/25,225.35 = 5,128.78/x
  3. Step 3: Cross multiply
    16,814.38x = 25,225.35 × 5,128.78
  4. Step 4: Simplify right side
    16,814.38x = 129,375,270.57
  5. Step 5: Solve for x
    x = 129,375,270.57/16,814.38
  6. Step 6: Final answer
    x = 7,694.32

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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.