Home / 12,855.11-19,229.36-12,067.79

Finding the Fourth Proportional to 12,855.11, 19,229.36 and 12,067.79

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Solution

The fourth proportional to 12,855.11, 19,229.36 and 12,067.79 is: 18,051.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.11 : 19,229.36 = 12,067.79 : x
  2. Step 2: Convert to fraction form
    12,855.11/19,229.36 = 12,067.79/x
  3. Step 3: Cross multiply
    12,855.11x = 19,229.36 × 12,067.79
  4. Step 4: Simplify right side
    12,855.11x = 232,055,721.83
  5. Step 5: Solve for x
    x = 232,055,721.83/12,855.11
  6. Step 6: Final answer
    x = 18,051.64

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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.