Home / 13,843.26-20,761.92-3,980.70

Finding the Fourth Proportional to 13,843.26, 20,761.92 and 3,980.70

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Solution

The fourth proportional to 13,843.26, 20,761.92 and 3,980.70 is: 5,970.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,843.26 : 20,761.92 = 3,980.70 : x
  2. Step 2: Convert to fraction form
    13,843.26/20,761.92 = 3,980.70/x
  3. Step 3: Cross multiply
    13,843.26x = 20,761.92 × 3,980.70
  4. Step 4: Simplify right side
    13,843.26x = 82,646,974.94
  5. Step 5: Solve for x
    x = 82,646,974.94/13,843.26
  6. Step 6: Final answer
    x = 5,970.20

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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.