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Finding the Fourth Proportional to 17,167.80, 25,719.30 and 8,819.40

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Solution

The fourth proportional to 17,167.80, 25,719.30 and 8,819.40 is: 13,212.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,167.80 : 25,719.30 = 8,819.40 : x
  2. Step 2: Convert to fraction form
    17,167.80/25,719.30 = 8,819.40/x
  3. Step 3: Cross multiply
    17,167.80x = 25,719.30 × 8,819.40
  4. Step 4: Simplify right side
    17,167.80x = 226,828,794.42
  5. Step 5: Solve for x
    x = 226,828,794.42/17,167.80
  6. Step 6: Final answer
    x = 13,212.46

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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.