Home / 13,704.92-20,557.32-3,316.64

Finding the Fourth Proportional to 13,704.92, 20,557.32 and 3,316.64

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Solution

The fourth proportional to 13,704.92, 20,557.32 and 3,316.64 is: 4,974.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.92 : 20,557.32 = 3,316.64 : x
  2. Step 2: Convert to fraction form
    13,704.92/20,557.32 = 3,316.64/x
  3. Step 3: Cross multiply
    13,704.92x = 20,557.32 × 3,316.64
  4. Step 4: Simplify right side
    13,704.92x = 68,181,229.80
  5. Step 5: Solve for x
    x = 68,181,229.80/13,704.92
  6. Step 6: Final answer
    x = 4,974.95

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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.