Home / 21,158.26-29,198.38-11,727.42

Finding the Fourth Proportional to 21,158.26, 29,198.38 and 11,727.42

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Solution

The fourth proportional to 21,158.26, 29,198.38 and 11,727.42 is: 16,183.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.26 : 29,198.38 = 11,727.42 : x
  2. Step 2: Convert to fraction form
    21,158.26/29,198.38 = 11,727.42/x
  3. Step 3: Cross multiply
    21,158.26x = 29,198.38 × 11,727.42
  4. Step 4: Simplify right side
    21,158.26x = 342,421,665.58
  5. Step 5: Solve for x
    x = 342,421,665.58/21,158.26
  6. Step 6: Final answer
    x = 16,183.83

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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.