Home / 18,531.38-27,799.78-5,382.05

Finding the Fourth Proportional to 18,531.38, 27,799.78 and 5,382.05

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Solution

The fourth proportional to 18,531.38, 27,799.78 and 5,382.05 is: 8,073.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.38 : 27,799.78 = 5,382.05 : x
  2. Step 2: Convert to fraction form
    18,531.38/27,799.78 = 5,382.05/x
  3. Step 3: Cross multiply
    18,531.38x = 27,799.78 × 5,382.05
  4. Step 4: Simplify right side
    18,531.38x = 149,619,678.72
  5. Step 5: Solve for x
    x = 149,619,678.72/18,531.38
  6. Step 6: Final answer
    x = 8,073.85

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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.