Home / 20,943.20-31,414.76-5,360.80

Finding the Fourth Proportional to 20,943.20, 31,414.76 and 5,360.80

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Solution

The fourth proportional to 20,943.20, 31,414.76 and 5,360.80 is: 8,041.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.20 : 31,414.76 = 5,360.80 : x
  2. Step 2: Convert to fraction form
    20,943.20/31,414.76 = 5,360.80/x
  3. Step 3: Cross multiply
    20,943.20x = 31,414.76 × 5,360.80
  4. Step 4: Simplify right side
    20,943.20x = 168,408,245.41
  5. Step 5: Solve for x
    x = 168,408,245.41/20,943.20
  6. Step 6: Final answer
    x = 8,041.19

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1.5x scale

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.