Home / 12,580.38-18,868.68-3,814.29

Finding the Fourth Proportional to 12,580.38, 18,868.68 and 3,814.29

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Solution

The fourth proportional to 12,580.38, 18,868.68 and 3,814.29 is: 5,720.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,580.38 : 18,868.68 = 3,814.29 : x
  2. Step 2: Convert to fraction form
    12,580.38/18,868.68 = 3,814.29/x
  3. Step 3: Cross multiply
    12,580.38x = 18,868.68 × 3,814.29
  4. Step 4: Simplify right side
    12,580.38x = 71,970,617.44
  5. Step 5: Solve for x
    x = 71,970,617.44/12,580.38
  6. Step 6: Final answer
    x = 5,720.86

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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.