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Finding the Fourth Proportional to 17,078.23, 25,619.91 and 5,391.28

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Solution

The fourth proportional to 17,078.23, 25,619.91 and 5,391.28 is: 8,087.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,078.23 : 25,619.91 = 5,391.28 : x
  2. Step 2: Convert to fraction form
    17,078.23/25,619.91 = 5,391.28/x
  3. Step 3: Cross multiply
    17,078.23x = 25,619.91 × 5,391.28
  4. Step 4: Simplify right side
    17,078.23x = 138,124,108.38
  5. Step 5: Solve for x
    x = 138,124,108.38/17,078.23
  6. Step 6: Final answer
    x = 8,087.73

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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.