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Finding the Fourth Proportional to 19,879.67, 29,833.14 and 8,192.81

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Solution

The fourth proportional to 19,879.67, 29,833.14 and 8,192.81 is: 12,294.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.67 : 29,833.14 = 8,192.81 : x
  2. Step 2: Convert to fraction form
    19,879.67/29,833.14 = 8,192.81/x
  3. Step 3: Cross multiply
    19,879.67x = 29,833.14 × 8,192.81
  4. Step 4: Simplify right side
    19,879.67x = 244,417,247.72
  5. Step 5: Solve for x
    x = 244,417,247.72/19,879.67
  6. Step 6: Final answer
    x = 12,294.83

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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.