Home / 20,344.20-30,638.22-17,905.68

Finding the Fourth Proportional to 20,344.20, 30,638.22 and 17,905.68

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Solution

The fourth proportional to 20,344.20, 30,638.22 and 17,905.68 is: 26,965.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.20 : 30,638.22 = 17,905.68 : x
  2. Step 2: Convert to fraction form
    20,344.20/30,638.22 = 17,905.68/x
  3. Step 3: Cross multiply
    20,344.20x = 30,638.22 × 17,905.68
  4. Step 4: Simplify right side
    20,344.20x = 548,598,163.09
  5. Step 5: Solve for x
    x = 548,598,163.09/20,344.20
  6. Step 6: Final answer
    x = 26,965.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.