Home / 17,939.28-26,908.92-4,791.72

Finding the Fourth Proportional to 17,939.28, 26,908.92 and 4,791.72

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Solution

The fourth proportional to 17,939.28, 26,908.92 and 4,791.72 is: 7,187.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,939.28 : 26,908.92 = 4,791.72 : x
  2. Step 2: Convert to fraction form
    17,939.28/26,908.92 = 4,791.72/x
  3. Step 3: Cross multiply
    17,939.28x = 26,908.92 × 4,791.72
  4. Step 4: Simplify right side
    17,939.28x = 128,940,010.14
  5. Step 5: Solve for x
    x = 128,940,010.14/17,939.28
  6. Step 6: Final answer
    x = 7,187.58

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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.