Home / 13,344.28-20,016.42-7,115.80

Finding the Fourth Proportional to 13,344.28, 20,016.42 and 7,115.80

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Solution

The fourth proportional to 13,344.28, 20,016.42 and 7,115.80 is: 10,673.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,344.28 : 20,016.42 = 7,115.80 : x
  2. Step 2: Convert to fraction form
    13,344.28/20,016.42 = 7,115.80/x
  3. Step 3: Cross multiply
    13,344.28x = 20,016.42 × 7,115.80
  4. Step 4: Simplify right side
    13,344.28x = 142,432,841.44
  5. Step 5: Solve for x
    x = 142,432,841.44/13,344.28
  6. Step 6: Final answer
    x = 10,673.70

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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.