Home / 12,520.80-18,757.44-6,680.16

Finding the Fourth Proportional to 12,520.80, 18,757.44 and 6,680.16

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Solution

The fourth proportional to 12,520.80, 18,757.44 and 6,680.16 is: 10,007.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.80 : 18,757.44 = 6,680.16 : x
  2. Step 2: Convert to fraction form
    12,520.80/18,757.44 = 6,680.16/x
  3. Step 3: Cross multiply
    12,520.80x = 18,757.44 × 6,680.16
  4. Step 4: Simplify right side
    12,520.80x = 125,302,700.39
  5. Step 5: Solve for x
    x = 125,302,700.39/12,520.80
  6. Step 6: Final answer
    x = 10,007.56

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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.