Home / 18,626.33-27,939.49-5,478.70

Finding the Fourth Proportional to 18,626.33, 27,939.49 and 5,478.70

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Solution

The fourth proportional to 18,626.33, 27,939.49 and 5,478.70 is: 8,218.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.33 : 27,939.49 = 5,478.70 : x
  2. Step 2: Convert to fraction form
    18,626.33/27,939.49 = 5,478.70/x
  3. Step 3: Cross multiply
    18,626.33x = 27,939.49 × 5,478.70
  4. Step 4: Simplify right side
    18,626.33x = 153,072,105.09
  5. Step 5: Solve for x
    x = 153,072,105.09/18,626.33
  6. Step 6: Final answer
    x = 8,218.05

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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.