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Finding the Fourth Proportional to 12,951.05, 17,872.04 and 7,286.11

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Solution

The fourth proportional to 12,951.05, 17,872.04 and 7,286.11 is: 10,054.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,951.05 : 17,872.04 = 7,286.11 : x
  2. Step 2: Convert to fraction form
    12,951.05/17,872.04 = 7,286.11/x
  3. Step 3: Cross multiply
    12,951.05x = 17,872.04 × 7,286.11
  4. Step 4: Simplify right side
    12,951.05x = 130,217,622.90
  5. Step 5: Solve for x
    x = 130,217,622.90/12,951.05
  6. Step 6: Final answer
    x = 10,054.60

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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.