Home / 20,822.20-28,734.27-12,754.60

Finding the Fourth Proportional to 20,822.20, 28,734.27 and 12,754.60

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Solution

The fourth proportional to 20,822.20, 28,734.27 and 12,754.60 is: 17,601.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.20 : 28,734.27 = 12,754.60 : x
  2. Step 2: Convert to fraction form
    20,822.20/28,734.27 = 12,754.60/x
  3. Step 3: Cross multiply
    20,822.20x = 28,734.27 × 12,754.60
  4. Step 4: Simplify right side
    20,822.20x = 366,494,120.14
  5. Step 5: Solve for x
    x = 366,494,120.14/20,822.20
  6. Step 6: Final answer
    x = 17,601.12

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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.