Home / 21,158-29,198.04-11,727.17

Finding the Fourth Proportional to 21,158, 29,198.04 and 11,727.17

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Solution

The fourth proportional to 21,158, 29,198.04 and 11,727.17 is: 16,183.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158 : 29,198.04 = 11,727.17 : x
  2. Step 2: Convert to fraction form
    21,158/29,198.04 = 11,727.17/x
  3. Step 3: Cross multiply
    21,158x = 29,198.04 × 11,727.17
  4. Step 4: Simplify right side
    21,158x = 342,410,378.75
  5. Step 5: Solve for x
    x = 342,410,378.75/21,158
  6. Step 6: Final answer
    x = 16,183.49

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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.