Home / 13,824.20-20,760.60-13,386.80

Finding the Fourth Proportional to 13,824.20, 20,760.60 and 13,386.80

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Solution

The fourth proportional to 13,824.20, 20,760.60 and 13,386.80 is: 20,103.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824.20 : 20,760.60 = 13,386.80 : x
  2. Step 2: Convert to fraction form
    13,824.20/20,760.60 = 13,386.80/x
  3. Step 3: Cross multiply
    13,824.20x = 20,760.60 × 13,386.80
  4. Step 4: Simplify right side
    13,824.20x = 277,918,000.08
  5. Step 5: Solve for x
    x = 277,918,000.08/13,824.20
  6. Step 6: Final answer
    x = 20,103.73

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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.