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Finding the Fourth Proportional to 17,819.30, 26,716.80 and 8,463.80

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Solution

The fourth proportional to 17,819.30, 26,716.80 and 8,463.80 is: 12,689.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,819.30 : 26,716.80 = 8,463.80 : x
  2. Step 2: Convert to fraction form
    17,819.30/26,716.80 = 8,463.80/x
  3. Step 3: Cross multiply
    17,819.30x = 26,716.80 × 8,463.80
  4. Step 4: Simplify right side
    17,819.30x = 226,125,651.84
  5. Step 5: Solve for x
    x = 226,125,651.84/17,819.30
  6. Step 6: Final answer
    x = 12,689.93

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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.