Home / 27,399.68-41,112.52-18,979.13

Finding the Fourth Proportional to 27,399.68, 41,112.52 and 18,979.13

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Solution

The fourth proportional to 27,399.68, 41,112.52 and 18,979.13 is: 28,477.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,399.68 : 41,112.52 = 18,979.13 : x
  2. Step 2: Convert to fraction form
    27,399.68/41,112.52 = 18,979.13/x
  3. Step 3: Cross multiply
    27,399.68x = 41,112.52 × 18,979.13
  4. Step 4: Simplify right side
    27,399.68x = 780,279,861.71
  5. Step 5: Solve for x
    x = 780,279,861.71/27,399.68
  6. Step 6: Final answer
    x = 28,477.70

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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.