Home / 20,213.44-30,348.12-13,958.80

Finding the Fourth Proportional to 20,213.44, 30,348.12 and 13,958.80

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Solution

The fourth proportional to 20,213.44, 30,348.12 and 13,958.80 is: 20,957.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.44 : 30,348.12 = 13,958.80 : x
  2. Step 2: Convert to fraction form
    20,213.44/30,348.12 = 13,958.80/x
  3. Step 3: Cross multiply
    20,213.44x = 30,348.12 × 13,958.80
  4. Step 4: Simplify right side
    20,213.44x = 423,623,337.46
  5. Step 5: Solve for x
    x = 423,623,337.46/20,213.44
  6. Step 6: Final answer
    x = 20,957.51

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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.