Home / 39,743.78-54,847.43-21,839.24

Finding the Fourth Proportional to 39,743.78, 54,847.43 and 21,839.24

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Solution

The fourth proportional to 39,743.78, 54,847.43 and 21,839.24 is: 30,138.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,743.78 : 54,847.43 = 21,839.24 : x
  2. Step 2: Convert to fraction form
    39,743.78/54,847.43 = 21,839.24/x
  3. Step 3: Cross multiply
    39,743.78x = 54,847.43 × 21,839.24
  4. Step 4: Simplify right side
    39,743.78x = 1,197,826,187.15
  5. Step 5: Solve for x
    x = 1,197,826,187.15/39,743.78
  6. Step 6: Final answer
    x = 30,138.71

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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.