Home / 10,126.22-15,189.79-3,105.72

Finding the Fourth Proportional to 10,126.22, 15,189.79 and 3,105.72

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Solution

The fourth proportional to 10,126.22, 15,189.79 and 3,105.72 is: 4,658.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,126.22 : 15,189.79 = 3,105.72 : x
  2. Step 2: Convert to fraction form
    10,126.22/15,189.79 = 3,105.72/x
  3. Step 3: Cross multiply
    10,126.22x = 15,189.79 × 3,105.72
  4. Step 4: Simplify right side
    10,126.22x = 47,175,234.60
  5. Step 5: Solve for x
    x = 47,175,234.60/10,126.22
  6. Step 6: Final answer
    x = 4,658.72

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1.5x scale

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.