Home / 13,839.04-20,759.20-3,979.04

Finding the Fourth Proportional to 13,839.04, 20,759.20 and 3,979.04

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Solution

The fourth proportional to 13,839.04, 20,759.20 and 3,979.04 is: 5,968.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.04 : 20,759.20 = 3,979.04 : x
  2. Step 2: Convert to fraction form
    13,839.04/20,759.20 = 3,979.04/x
  3. Step 3: Cross multiply
    13,839.04x = 20,759.20 × 3,979.04
  4. Step 4: Simplify right side
    13,839.04x = 82,601,687.17
  5. Step 5: Solve for x
    x = 82,601,687.17/13,839.04
  6. Step 6: Final answer
    x = 5,968.74

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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.