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Finding the Fourth Proportional to 15,067.08, 20,791.92 and 8,261.10

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Solution

The fourth proportional to 15,067.08, 20,791.92 and 8,261.10 is: 11,399.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,067.08 : 20,791.92 = 8,261.10 : x
  2. Step 2: Convert to fraction form
    15,067.08/20,791.92 = 8,261.10/x
  3. Step 3: Cross multiply
    15,067.08x = 20,791.92 × 8,261.10
  4. Step 4: Simplify right side
    15,067.08x = 171,764,130.31
  5. Step 5: Solve for x
    x = 171,764,130.31/15,067.08
  6. Step 6: Final answer
    x = 11,399.96

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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.