Home / 18,279.43-27,415.50-5,131.93

Finding the Fourth Proportional to 18,279.43, 27,415.50 and 5,131.93

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Solution

The fourth proportional to 18,279.43, 27,415.50 and 5,131.93 is: 7,696.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.43 : 27,415.50 = 5,131.93 : x
  2. Step 2: Convert to fraction form
    18,279.43/27,415.50 = 5,131.93/x
  3. Step 3: Cross multiply
    18,279.43x = 27,415.50 × 5,131.93
  4. Step 4: Simplify right side
    18,279.43x = 140,694,426.92
  5. Step 5: Solve for x
    x = 140,694,426.92/18,279.43
  6. Step 6: Final answer
    x = 7,696.87

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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.