Home / 19,120.97-28,680.62-9,760.75

Finding the Fourth Proportional to 19,120.97, 28,680.62 and 9,760.75

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Solution

The fourth proportional to 19,120.97, 28,680.62 and 9,760.75 is: 14,640.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.97 : 28,680.62 = 9,760.75 : x
  2. Step 2: Convert to fraction form
    19,120.97/28,680.62 = 9,760.75/x
  3. Step 3: Cross multiply
    19,120.97x = 28,680.62 × 9,760.75
  4. Step 4: Simplify right side
    19,120.97x = 279,944,241.16
  5. Step 5: Solve for x
    x = 279,944,241.16/19,120.97
  6. Step 6: Final answer
    x = 14,640.69

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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.