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Finding the Fourth Proportional to 19,795.29, 29,698.97 and 8,109.42

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Solution

The fourth proportional to 19,795.29, 29,698.97 and 8,109.42 is: 12,166.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,795.29 : 29,698.97 = 8,109.42 : x
  2. Step 2: Convert to fraction form
    19,795.29/29,698.97 = 8,109.42/x
  3. Step 3: Cross multiply
    19,795.29x = 29,698.97 × 8,109.42
  4. Step 4: Simplify right side
    19,795.29x = 240,841,380.75
  5. Step 5: Solve for x
    x = 240,841,380.75/19,795.29
  6. Step 6: Final answer
    x = 12,166.60

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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.