Home / 13,922.40-20,932.20-13,630.80

Finding the Fourth Proportional to 13,922.40, 20,932.20 and 13,630.80

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Solution

The fourth proportional to 13,922.40, 20,932.20 and 13,630.80 is: 20,493.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,922.40 : 20,932.20 = 13,630.80 : x
  2. Step 2: Convert to fraction form
    13,922.40/20,932.20 = 13,630.80/x
  3. Step 3: Cross multiply
    13,922.40x = 20,932.20 × 13,630.80
  4. Step 4: Simplify right side
    13,922.40x = 285,322,631.76
  5. Step 5: Solve for x
    x = 285,322,631.76/13,922.40
  6. Step 6: Final answer
    x = 20,493.78

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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.