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Finding the Fourth Proportional to 17,910.68, 26,859 and 10,517

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Solution

The fourth proportional to 17,910.68, 26,859 and 10,517 is: 15,771.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,910.68 : 26,859 = 10,517 : x
  2. Step 2: Convert to fraction form
    17,910.68/26,859 = 10,517/x
  3. Step 3: Cross multiply
    17,910.68x = 26,859 × 10,517
  4. Step 4: Simplify right side
    17,910.68x = 282,476,103
  5. Step 5: Solve for x
    x = 282,476,103/17,910.68
  6. Step 6: Final answer
    x = 15,771.38

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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.