Home / 21,718.57-29,974.85-13,761.54

Finding the Fourth Proportional to 21,718.57, 29,974.85 and 13,761.54

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Solution

The fourth proportional to 21,718.57, 29,974.85 and 13,761.54 is: 18,992.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,718.57 : 29,974.85 = 13,761.54 : x
  2. Step 2: Convert to fraction form
    21,718.57/29,974.85 = 13,761.54/x
  3. Step 3: Cross multiply
    21,718.57x = 29,974.85 × 13,761.54
  4. Step 4: Simplify right side
    21,718.57x = 412,500,097.27
  5. Step 5: Solve for x
    x = 412,500,097.27/21,718.57
  6. Step 6: Final answer
    x = 18,992.97

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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.