Home / 13,401.44-20,109.60-6,828.80

Finding the Fourth Proportional to 13,401.44, 20,109.60 and 6,828.80

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Solution

The fourth proportional to 13,401.44, 20,109.60 and 6,828.80 is: 10,246.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.44 : 20,109.60 = 6,828.80 : x
  2. Step 2: Convert to fraction form
    13,401.44/20,109.60 = 6,828.80/x
  3. Step 3: Cross multiply
    13,401.44x = 20,109.60 × 6,828.80
  4. Step 4: Simplify right side
    13,401.44x = 137,324,436.48
  5. Step 5: Solve for x
    x = 137,324,436.48/13,401.44
  6. Step 6: Final answer
    x = 10,246.99

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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.