Home / 20,126.26-30,170.76-7,642.54

Finding the Fourth Proportional to 20,126.26, 30,170.76 and 7,642.54

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Solution

The fourth proportional to 20,126.26, 30,170.76 and 7,642.54 is: 11,456.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.26 : 30,170.76 = 7,642.54 : x
  2. Step 2: Convert to fraction form
    20,126.26/30,170.76 = 7,642.54/x
  3. Step 3: Cross multiply
    20,126.26x = 30,170.76 × 7,642.54
  4. Step 4: Simplify right side
    20,126.26x = 230,581,240.13
  5. Step 5: Solve for x
    x = 230,581,240.13/20,126.26
  6. Step 6: Final answer
    x = 11,456.74

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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.