Home / 18,318.18-27,474.78-5,171.61

Finding the Fourth Proportional to 18,318.18, 27,474.78 and 5,171.61

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Solution

The fourth proportional to 18,318.18, 27,474.78 and 5,171.61 is: 7,756.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.18 : 27,474.78 = 5,171.61 : x
  2. Step 2: Convert to fraction form
    18,318.18/27,474.78 = 5,171.61/x
  3. Step 3: Cross multiply
    18,318.18x = 27,474.78 × 5,171.61
  4. Step 4: Simplify right side
    18,318.18x = 142,088,847.00
  5. Step 5: Solve for x
    x = 142,088,847.00/18,318.18
  6. Step 6: Final answer
    x = 7,756.71

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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.