Home / 13,414.40-20,131.20-5,628.80

Finding the Fourth Proportional to 13,414.40, 20,131.20 and 5,628.80

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Solution

The fourth proportional to 13,414.40, 20,131.20 and 5,628.80 is: 8,447.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,414.40 : 20,131.20 = 5,628.80 : x
  2. Step 2: Convert to fraction form
    13,414.40/20,131.20 = 5,628.80/x
  3. Step 3: Cross multiply
    13,414.40x = 20,131.20 × 5,628.80
  4. Step 4: Simplify right side
    13,414.40x = 113,314,498.56
  5. Step 5: Solve for x
    x = 113,314,498.56/13,414.40
  6. Step 6: Final answer
    x = 8,447.23

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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.