Home / 13,491.25-20,229.03-4,128.59

Finding the Fourth Proportional to 13,491.25, 20,229.03 and 4,128.59

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Solution

The fourth proportional to 13,491.25, 20,229.03 and 4,128.59 is: 6,190.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.25 : 20,229.03 = 4,128.59 : x
  2. Step 2: Convert to fraction form
    13,491.25/20,229.03 = 4,128.59/x
  3. Step 3: Cross multiply
    13,491.25x = 20,229.03 × 4,128.59
  4. Step 4: Simplify right side
    13,491.25x = 83,517,370.97
  5. Step 5: Solve for x
    x = 83,517,370.97/13,491.25
  6. Step 6: Final answer
    x = 6,190.48

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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.