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Finding the Fourth Proportional to 17,316.75, 25,965.87 and 8,988.39

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Solution

The fourth proportional to 17,316.75, 25,965.87 and 8,988.39 is: 13,477.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,316.75 : 25,965.87 = 8,988.39 : x
  2. Step 2: Convert to fraction form
    17,316.75/25,965.87 = 8,988.39/x
  3. Step 3: Cross multiply
    17,316.75x = 25,965.87 × 8,988.39
  4. Step 4: Simplify right side
    17,316.75x = 233,391,366.25
  5. Step 5: Solve for x
    x = 233,391,366.25/17,316.75
  6. Step 6: Final answer
    x = 13,477.78

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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.