Home / 39,338.78-54,286.83-21,433.92

Finding the Fourth Proportional to 39,338.78, 54,286.83 and 21,433.92

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Solution

The fourth proportional to 39,338.78, 54,286.83 and 21,433.92 is: 29,578.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,338.78 : 54,286.83 = 21,433.92 : x
  2. Step 2: Convert to fraction form
    39,338.78/54,286.83 = 21,433.92/x
  3. Step 3: Cross multiply
    39,338.78x = 54,286.83 × 21,433.92
  4. Step 4: Simplify right side
    39,338.78x = 1,163,579,571.27
  5. Step 5: Solve for x
    x = 1,163,579,571.27/39,338.78
  6. Step 6: Final answer
    x = 29,578.44

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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.