Home / 10,129.91-15,166.26-5,375.31

Finding the Fourth Proportional to 10,129.91, 15,166.26 and 5,375.31

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Solution

The fourth proportional to 10,129.91, 15,166.26 and 5,375.31 is: 8,047.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.91 : 15,166.26 = 5,375.31 : x
  2. Step 2: Convert to fraction form
    10,129.91/15,166.26 = 5,375.31/x
  3. Step 3: Cross multiply
    10,129.91x = 15,166.26 × 5,375.31
  4. Step 4: Simplify right side
    10,129.91x = 81,523,392.60
  5. Step 5: Solve for x
    x = 81,523,392.60/10,129.91
  6. Step 6: Final answer
    x = 8,047.79

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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.