Home / 13,382.28-20,081.46-7,146.90

Finding the Fourth Proportional to 13,382.28, 20,081.46 and 7,146.90

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Solution

The fourth proportional to 13,382.28, 20,081.46 and 7,146.90 is: 10,724.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.28 : 20,081.46 = 7,146.90 : x
  2. Step 2: Convert to fraction form
    13,382.28/20,081.46 = 7,146.90/x
  3. Step 3: Cross multiply
    13,382.28x = 20,081.46 × 7,146.90
  4. Step 4: Simplify right side
    13,382.28x = 143,520,186.47
  5. Step 5: Solve for x
    x = 143,520,186.47/13,382.28
  6. Step 6: Final answer
    x = 10,724.64

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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.