Home / 13,620.76-20,429.61-3,761.44

Finding the Fourth Proportional to 13,620.76, 20,429.61 and 3,761.44

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Solution

The fourth proportional to 13,620.76, 20,429.61 and 3,761.44 is: 5,641.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.76 : 20,429.61 = 3,761.44 : x
  2. Step 2: Convert to fraction form
    13,620.76/20,429.61 = 3,761.44/x
  3. Step 3: Cross multiply
    13,620.76x = 20,429.61 × 3,761.44
  4. Step 4: Simplify right side
    13,620.76x = 76,844,752.24
  5. Step 5: Solve for x
    x = 76,844,752.24/13,620.76
  6. Step 6: Final answer
    x = 5,641.74

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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.