Home / 39,388.82-54,353.49-21,482.78

Finding the Fourth Proportional to 39,388.82, 54,353.49 and 21,482.78

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Solution

The fourth proportional to 39,388.82, 54,353.49 and 21,482.78 is: 29,644.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,388.82 : 54,353.49 = 21,482.78 : x
  2. Step 2: Convert to fraction form
    39,388.82/54,353.49 = 21,482.78/x
  3. Step 3: Cross multiply
    39,388.82x = 54,353.49 × 21,482.78
  4. Step 4: Simplify right side
    39,388.82x = 1,167,664,067.90
  5. Step 5: Solve for x
    x = 1,167,664,067.90/39,388.82
  6. Step 6: Final answer
    x = 29,644.56

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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.