Home / 12,724.78-19,087.20-3,960.58

Finding the Fourth Proportional to 12,724.78, 19,087.20 and 3,960.58

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Solution

The fourth proportional to 12,724.78, 19,087.20 and 3,960.58 is: 5,940.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,724.78 : 19,087.20 = 3,960.58 : x
  2. Step 2: Convert to fraction form
    12,724.78/19,087.20 = 3,960.58/x
  3. Step 3: Cross multiply
    12,724.78x = 19,087.20 × 3,960.58
  4. Step 4: Simplify right side
    12,724.78x = 75,596,382.58
  5. Step 5: Solve for x
    x = 75,596,382.58/12,724.78
  6. Step 6: Final answer
    x = 5,940.88

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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.