Home / 12,951.36-17,872.85-7,286.11

Finding the Fourth Proportional to 12,951.36, 17,872.85 and 7,286.11

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Solution

The fourth proportional to 12,951.36, 17,872.85 and 7,286.11 is: 10,054.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,951.36 : 17,872.85 = 7,286.11 : x
  2. Step 2: Convert to fraction form
    12,951.36/17,872.85 = 7,286.11/x
  3. Step 3: Cross multiply
    12,951.36x = 17,872.85 × 7,286.11
  4. Step 4: Simplify right side
    12,951.36x = 130,223,517.17
  5. Step 5: Solve for x
    x = 130,223,517.17/12,951.36
  6. Step 6: Final answer
    x = 10,054.81

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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.