Home / 13,974.39-20,912.38-10,661.09

Finding the Fourth Proportional to 13,974.39, 20,912.38 and 10,661.09

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Solution

The fourth proportional to 13,974.39, 20,912.38 and 10,661.09 is: 15,954.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,974.39 : 20,912.38 = 10,661.09 : x
  2. Step 2: Convert to fraction form
    13,974.39/20,912.38 = 10,661.09/x
  3. Step 3: Cross multiply
    13,974.39x = 20,912.38 × 10,661.09
  4. Step 4: Simplify right side
    13,974.39x = 222,948,634.08
  5. Step 5: Solve for x
    x = 222,948,634.08/13,974.39
  6. Step 6: Final answer
    x = 15,954.09

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1.5x scale

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.