Home / 21,309.33-31,974.54-15,673.09

Finding the Fourth Proportional to 21,309.33, 31,974.54 and 15,673.09

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Solution

The fourth proportional to 21,309.33, 31,974.54 and 15,673.09 is: 23,517.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.33 : 31,974.54 = 15,673.09 : x
  2. Step 2: Convert to fraction form
    21,309.33/31,974.54 = 15,673.09/x
  3. Step 3: Cross multiply
    21,309.33x = 31,974.54 × 15,673.09
  4. Step 4: Simplify right side
    21,309.33x = 501,139,843.13
  5. Step 5: Solve for x
    x = 501,139,843.13/21,309.33
  6. Step 6: Final answer
    x = 23,517.39

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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.