Home / 18,736.38-28,109.10-5,589.78

Finding the Fourth Proportional to 18,736.38, 28,109.10 and 5,589.78

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Solution

The fourth proportional to 18,736.38, 28,109.10 and 5,589.78 is: 8,386.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.38 : 28,109.10 = 5,589.78 : x
  2. Step 2: Convert to fraction form
    18,736.38/28,109.10 = 5,589.78/x
  3. Step 3: Cross multiply
    18,736.38x = 28,109.10 × 5,589.78
  4. Step 4: Simplify right side
    18,736.38x = 157,123,685.00
  5. Step 5: Solve for x
    x = 157,123,685.00/18,736.38
  6. Step 6: Final answer
    x = 8,386.02

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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.