Home / 21,067.94-29,079.34-13,105.64

Finding the Fourth Proportional to 21,067.94, 29,079.34 and 13,105.64

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Solution

The fourth proportional to 21,067.94, 29,079.34 and 13,105.64 is: 18,089.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.94 : 29,079.34 = 13,105.64 : x
  2. Step 2: Convert to fraction form
    21,067.94/29,079.34 = 13,105.64/x
  3. Step 3: Cross multiply
    21,067.94x = 29,079.34 × 13,105.64
  4. Step 4: Simplify right side
    21,067.94x = 381,103,361.48
  5. Step 5: Solve for x
    x = 381,103,361.48/21,067.94
  6. Step 6: Final answer
    x = 18,089.26

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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.