Home / 12,631.82-18,947.80-3,271.19

Finding the Fourth Proportional to 12,631.82, 18,947.80 and 3,271.19

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Solution

The fourth proportional to 12,631.82, 18,947.80 and 3,271.19 is: 4,906.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.82 : 18,947.80 = 3,271.19 : x
  2. Step 2: Convert to fraction form
    12,631.82/18,947.80 = 3,271.19/x
  3. Step 3: Cross multiply
    12,631.82x = 18,947.80 × 3,271.19
  4. Step 4: Simplify right side
    12,631.82x = 61,981,750.97
  5. Step 5: Solve for x
    x = 61,981,750.97/12,631.82
  6. Step 6: Final answer
    x = 4,906.79

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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.