Home / 12,711.20-19,067.52-3,947.36

Finding the Fourth Proportional to 12,711.20, 19,067.52 and 3,947.36

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Solution

The fourth proportional to 12,711.20, 19,067.52 and 3,947.36 is: 5,921.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.20 : 19,067.52 = 3,947.36 : x
  2. Step 2: Convert to fraction form
    12,711.20/19,067.52 = 3,947.36/x
  3. Step 3: Cross multiply
    12,711.20x = 19,067.52 × 3,947.36
  4. Step 4: Simplify right side
    12,711.20x = 75,266,365.75
  5. Step 5: Solve for x
    x = 75,266,365.75/12,711.20
  6. Step 6: Final answer
    x = 5,921.26

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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.