Home / 20,865.48-28,787.22-11,906.52

Finding the Fourth Proportional to 20,865.48, 28,787.22 and 11,906.52

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Solution

The fourth proportional to 20,865.48, 28,787.22 and 11,906.52 is: 16,426.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.48 : 28,787.22 = 11,906.52 : x
  2. Step 2: Convert to fraction form
    20,865.48/28,787.22 = 11,906.52/x
  3. Step 3: Cross multiply
    20,865.48x = 28,787.22 × 11,906.52
  4. Step 4: Simplify right side
    20,865.48x = 342,755,610.67
  5. Step 5: Solve for x
    x = 342,755,610.67/20,865.48
  6. Step 6: Final answer
    x = 16,426.92

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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.