Home / 20,872.92-31,260.94-20,717.35

Finding the Fourth Proportional to 20,872.92, 31,260.94 and 20,717.35

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Solution

The fourth proportional to 20,872.92, 31,260.94 and 20,717.35 is: 31,027.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.92 : 31,260.94 = 20,717.35 : x
  2. Step 2: Convert to fraction form
    20,872.92/31,260.94 = 20,717.35/x
  3. Step 3: Cross multiply
    20,872.92x = 31,260.94 × 20,717.35
  4. Step 4: Simplify right side
    20,872.92x = 647,644,045.28
  5. Step 5: Solve for x
    x = 647,644,045.28/20,872.92
  6. Step 6: Final answer
    x = 31,027.95

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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.