Home / 13,956.20-20,958.60-13,518.80

Finding the Fourth Proportional to 13,956.20, 20,958.60 and 13,518.80

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Solution

The fourth proportional to 13,956.20, 20,958.60 and 13,518.80 is: 20,301.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.20 : 20,958.60 = 13,518.80 : x
  2. Step 2: Convert to fraction form
    13,956.20/20,958.60 = 13,518.80/x
  3. Step 3: Cross multiply
    13,956.20x = 20,958.60 × 13,518.80
  4. Step 4: Simplify right side
    13,956.20x = 283,335,121.68
  5. Step 5: Solve for x
    x = 283,335,121.68/13,956.20
  6. Step 6: Final answer
    x = 20,301.74

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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.