Home / 13,512.72-20,262.60-5,717.28

Finding the Fourth Proportional to 13,512.72, 20,262.60 and 5,717.28

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Solution

The fourth proportional to 13,512.72, 20,262.60 and 5,717.28 is: 8,573.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.72 : 20,262.60 = 5,717.28 : x
  2. Step 2: Convert to fraction form
    13,512.72/20,262.60 = 5,717.28/x
  3. Step 3: Cross multiply
    13,512.72x = 20,262.60 × 5,717.28
  4. Step 4: Simplify right side
    13,512.72x = 115,846,957.73
  5. Step 5: Solve for x
    x = 115,846,957.73/13,512.72
  6. Step 6: Final answer
    x = 8,573.18

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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.