Home / 39,660.14-54,729.78-21,754.70

Finding the Fourth Proportional to 39,660.14, 54,729.78 and 21,754.70

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Solution

The fourth proportional to 39,660.14, 54,729.78 and 21,754.70 is: 30,020.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,660.14 : 54,729.78 = 21,754.70 : x
  2. Step 2: Convert to fraction form
    39,660.14/54,729.78 = 21,754.70/x
  3. Step 3: Cross multiply
    39,660.14x = 54,729.78 × 21,754.70
  4. Step 4: Simplify right side
    39,660.14x = 1,190,629,944.97
  5. Step 5: Solve for x
    x = 1,190,629,944.97/39,660.14
  6. Step 6: Final answer
    x = 30,020.82

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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.