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Finding the Fourth Proportional to 18,605.82, 27,879.56 and 15,821.04

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Solution

The fourth proportional to 18,605.82, 27,879.56 and 15,821.04 is: 23,706.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.82 : 27,879.56 = 15,821.04 : x
  2. Step 2: Convert to fraction form
    18,605.82/27,879.56 = 15,821.04/x
  3. Step 3: Cross multiply
    18,605.82x = 27,879.56 × 15,821.04
  4. Step 4: Simplify right side
    18,605.82x = 441,083,633.94
  5. Step 5: Solve for x
    x = 441,083,633.94/18,605.82
  6. Step 6: Final answer
    x = 23,706.76

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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.