Home / 10,149.26-15,225.33-3,129.85

Finding the Fourth Proportional to 10,149.26, 15,225.33 and 3,129.85

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Solution

The fourth proportional to 10,149.26, 15,225.33 and 3,129.85 is: 4,695.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,149.26 : 15,225.33 = 3,129.85 : x
  2. Step 2: Convert to fraction form
    10,149.26/15,225.33 = 3,129.85/x
  3. Step 3: Cross multiply
    10,149.26x = 15,225.33 × 3,129.85
  4. Step 4: Simplify right side
    10,149.26x = 47,652,999.10
  5. Step 5: Solve for x
    x = 47,652,999.10/10,149.26
  6. Step 6: Final answer
    x = 4,695.22

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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.