Home / 21,074.43-29,084.22-11,642.79

Finding the Fourth Proportional to 21,074.43, 29,084.22 and 11,642.79

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Solution

The fourth proportional to 21,074.43, 29,084.22 and 11,642.79 is: 16,067.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.43 : 29,084.22 = 11,642.79 : x
  2. Step 2: Convert to fraction form
    21,074.43/29,084.22 = 11,642.79/x
  3. Step 3: Cross multiply
    21,074.43x = 29,084.22 × 11,642.79
  4. Step 4: Simplify right side
    21,074.43x = 338,621,465.77
  5. Step 5: Solve for x
    x = 338,621,465.77/21,074.43
  6. Step 6: Final answer
    x = 16,067.88

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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.