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Finding the Fourth Proportional to 18,992, 26,209.50 and 10,609.04

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Solution

The fourth proportional to 18,992, 26,209.50 and 10,609.04 is: 14,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,992 : 26,209.50 = 10,609.04 : x
  2. Step 2: Convert to fraction form
    18,992/26,209.50 = 10,609.04/x
  3. Step 3: Cross multiply
    18,992x = 26,209.50 × 10,609.04
  4. Step 4: Simplify right side
    18,992x = 278,057,633.88
  5. Step 5: Solve for x
    x = 278,057,633.88/18,992
  6. Step 6: Final answer
    x = 14,640.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.