Home / 12,517.44-17,280.84-9,960.17

Finding the Fourth Proportional to 12,517.44, 17,280.84 and 9,960.17

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Solution

The fourth proportional to 12,517.44, 17,280.84 and 9,960.17 is: 13,750.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,517.44 : 17,280.84 = 9,960.17 : x
  2. Step 2: Convert to fraction form
    12,517.44/17,280.84 = 9,960.17/x
  3. Step 3: Cross multiply
    12,517.44x = 17,280.84 × 9,960.17
  4. Step 4: Simplify right side
    12,517.44x = 172,120,055.09
  5. Step 5: Solve for x
    x = 172,120,055.09/12,517.44
  6. Step 6: Final answer
    x = 13,750.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.