Home / 21,671.27-29,906.94-12,239.82

Finding the Fourth Proportional to 21,671.27, 29,906.94 and 12,239.82

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Solution

The fourth proportional to 21,671.27, 29,906.94 and 12,239.82 is: 16,891.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.27 : 29,906.94 = 12,239.82 : x
  2. Step 2: Convert to fraction form
    21,671.27/29,906.94 = 12,239.82/x
  3. Step 3: Cross multiply
    21,671.27x = 29,906.94 × 12,239.82
  4. Step 4: Simplify right side
    21,671.27x = 366,055,562.35
  5. Step 5: Solve for x
    x = 366,055,562.35/21,671.27
  6. Step 6: Final answer
    x = 16,891.29

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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.