Home / 21,314.96-31,972.42-11,833.09

Finding the Fourth Proportional to 21,314.96, 31,972.42 and 11,833.09

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Solution

The fourth proportional to 21,314.96, 31,972.42 and 11,833.09 is: 17,749.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.96 : 31,972.42 = 11,833.09 : x
  2. Step 2: Convert to fraction form
    21,314.96/31,972.42 = 11,833.09/x
  3. Step 3: Cross multiply
    21,314.96x = 31,972.42 × 11,833.09
  4. Step 4: Simplify right side
    21,314.96x = 378,332,458.24
  5. Step 5: Solve for x
    x = 378,332,458.24/21,314.96
  6. Step 6: Final answer
    x = 17,749.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.