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Finding the Fourth Proportional to 17,251.30, 25,889.82 and 12,819.22

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Solution

The fourth proportional to 17,251.30, 25,889.82 and 12,819.22 is: 19,238.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,251.30 : 25,889.82 = 12,819.22 : x
  2. Step 2: Convert to fraction form
    17,251.30/25,889.82 = 12,819.22/x
  3. Step 3: Cross multiply
    17,251.30x = 25,889.82 × 12,819.22
  4. Step 4: Simplify right side
    17,251.30x = 331,887,298.34
  5. Step 5: Solve for x
    x = 331,887,298.34/17,251.30
  6. Step 6: Final answer
    x = 19,238.39

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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.