Home / 39,679.73-54,759.61-21,775.38

Finding the Fourth Proportional to 39,679.73, 54,759.61 and 21,775.38

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Solution

The fourth proportional to 39,679.73, 54,759.61 and 21,775.38 is: 30,050.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,679.73 : 54,759.61 = 21,775.38 : x
  2. Step 2: Convert to fraction form
    39,679.73/54,759.61 = 21,775.38/x
  3. Step 3: Cross multiply
    39,679.73x = 54,759.61 × 21,775.38
  4. Step 4: Simplify right side
    39,679.73x = 1,192,410,933.73
  5. Step 5: Solve for x
    x = 1,192,410,933.73/39,679.73
  6. Step 6: Final answer
    x = 30,050.89

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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.