Home / 13,842.94-20,761.62-3,979.90

Finding the Fourth Proportional to 13,842.94, 20,761.62 and 3,979.90

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Solution

The fourth proportional to 13,842.94, 20,761.62 and 3,979.90 is: 5,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,842.94 : 20,761.62 = 3,979.90 : x
  2. Step 2: Convert to fraction form
    13,842.94/20,761.62 = 3,979.90/x
  3. Step 3: Cross multiply
    13,842.94x = 20,761.62 × 3,979.90
  4. Step 4: Simplify right side
    13,842.94x = 82,629,171.44
  5. Step 5: Solve for x
    x = 82,629,171.44/13,842.94
  6. Step 6: Final answer
    x = 5,969.05

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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.