Home / 21,231.82-29,299.62-11,800.18

Finding the Fourth Proportional to 21,231.82, 29,299.62 and 11,800.18

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Solution

The fourth proportional to 21,231.82, 29,299.62 and 11,800.18 is: 16,284.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.82 : 29,299.62 = 11,800.18 : x
  2. Step 2: Convert to fraction form
    21,231.82/29,299.62 = 11,800.18/x
  3. Step 3: Cross multiply
    21,231.82x = 29,299.62 × 11,800.18
  4. Step 4: Simplify right side
    21,231.82x = 345,740,789.93
  5. Step 5: Solve for x
    x = 345,740,789.93/21,231.82
  6. Step 6: Final answer
    x = 16,284.09

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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.