Home / 13,449.92-20,193.60-6,880.64

Finding the Fourth Proportional to 13,449.92, 20,193.60 and 6,880.64

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Solution

The fourth proportional to 13,449.92, 20,193.60 and 6,880.64 is: 10,330.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.92 : 20,193.60 = 6,880.64 : x
  2. Step 2: Convert to fraction form
    13,449.92/20,193.60 = 6,880.64/x
  3. Step 3: Cross multiply
    13,449.92x = 20,193.60 × 6,880.64
  4. Step 4: Simplify right side
    13,449.92x = 138,944,891.90
  5. Step 5: Solve for x
    x = 138,944,891.90/13,449.92
  6. Step 6: Final answer
    x = 10,330.54

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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.