Home / 13,821.22-20,728.99-3,958.66

Finding the Fourth Proportional to 13,821.22, 20,728.99 and 3,958.66

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Solution

The fourth proportional to 13,821.22, 20,728.99 and 3,958.66 is: 5,937.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.22 : 20,728.99 = 3,958.66 : x
  2. Step 2: Convert to fraction form
    13,821.22/20,728.99 = 3,958.66/x
  3. Step 3: Cross multiply
    13,821.22x = 20,728.99 × 3,958.66
  4. Step 4: Simplify right side
    13,821.22x = 82,059,023.55
  5. Step 5: Solve for x
    x = 82,059,023.55/13,821.22
  6. Step 6: Final answer
    x = 5,937.18

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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.