Home / 21,183.09-31,724.54-18,394.62

Finding the Fourth Proportional to 21,183.09, 31,724.54 and 18,394.62

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Solution

The fourth proportional to 21,183.09, 31,724.54 and 18,394.62 is: 27,548.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.09 : 31,724.54 = 18,394.62 : x
  2. Step 2: Convert to fraction form
    21,183.09/31,724.54 = 18,394.62/x
  3. Step 3: Cross multiply
    21,183.09x = 31,724.54 × 18,394.62
  4. Step 4: Simplify right side
    21,183.09x = 583,560,857.97
  5. Step 5: Solve for x
    x = 583,560,857.97/21,183.09
  6. Step 6: Final answer
    x = 27,548.43

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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.