Home / 13,771.20-20,656.83-3,382.95

Finding the Fourth Proportional to 13,771.20, 20,656.83 and 3,382.95

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Solution

The fourth proportional to 13,771.20, 20,656.83 and 3,382.95 is: 5,074.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.20 : 20,656.83 = 3,382.95 : x
  2. Step 2: Convert to fraction form
    13,771.20/20,656.83 = 3,382.95/x
  3. Step 3: Cross multiply
    13,771.20x = 20,656.83 × 3,382.95
  4. Step 4: Simplify right side
    13,771.20x = 69,881,023.05
  5. Step 5: Solve for x
    x = 69,881,023.05/13,771.20
  6. Step 6: Final answer
    x = 5,074.43

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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.