Home / 12,218.79-18,288.90-11,067.87

Finding the Fourth Proportional to 12,218.79, 18,288.90 and 11,067.87

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Solution

The fourth proportional to 12,218.79, 18,288.90 and 11,067.87 is: 16,566.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.79 : 18,288.90 = 11,067.87 : x
  2. Step 2: Convert to fraction form
    12,218.79/18,288.90 = 11,067.87/x
  3. Step 3: Cross multiply
    12,218.79x = 18,288.90 × 11,067.87
  4. Step 4: Simplify right side
    12,218.79x = 202,419,167.64
  5. Step 5: Solve for x
    x = 202,419,167.64/12,218.79
  6. Step 6: Final answer
    x = 16,566.22

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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.