Home / 20,504.20-30,754.48-5,712.80

Finding the Fourth Proportional to 20,504.20, 30,754.48 and 5,712.80

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Solution

The fourth proportional to 20,504.20, 30,754.48 and 5,712.80 is: 8,568.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.20 : 30,754.48 = 5,712.80 : x
  2. Step 2: Convert to fraction form
    20,504.20/30,754.48 = 5,712.80/x
  3. Step 3: Cross multiply
    20,504.20x = 30,754.48 × 5,712.80
  4. Step 4: Simplify right side
    20,504.20x = 175,694,193.34
  5. Step 5: Solve for x
    x = 175,694,193.34/20,504.20
  6. Step 6: Final answer
    x = 8,568.69

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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.