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Finding the Fourth Proportional to 17,517.88, 26,276.80 and 5,205.88

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Solution

The fourth proportional to 17,517.88, 26,276.80 and 5,205.88 is: 7,808.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,517.88 : 26,276.80 = 5,205.88 : x
  2. Step 2: Convert to fraction form
    17,517.88/26,276.80 = 5,205.88/x
  3. Step 3: Cross multiply
    17,517.88x = 26,276.80 × 5,205.88
  4. Step 4: Simplify right side
    17,517.88x = 136,793,867.58
  5. Step 5: Solve for x
    x = 136,793,867.58/17,517.88
  6. Step 6: Final answer
    x = 7,808.81

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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.