Home / 13,318.92-18,380.16-7,350.62

Finding the Fourth Proportional to 13,318.92, 18,380.16 and 7,350.62

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Solution

The fourth proportional to 13,318.92, 18,380.16 and 7,350.62 is: 10,143.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.92 : 18,380.16 = 7,350.62 : x
  2. Step 2: Convert to fraction form
    13,318.92/18,380.16 = 7,350.62/x
  3. Step 3: Cross multiply
    13,318.92x = 18,380.16 × 7,350.62
  4. Step 4: Simplify right side
    13,318.92x = 135,105,479.80
  5. Step 5: Solve for x
    x = 135,105,479.80/13,318.92
  6. Step 6: Final answer
    x = 10,143.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.