Home / 39,845.53-54,986.84-21,940.49

Finding the Fourth Proportional to 39,845.53, 54,986.84 and 21,940.49

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Solution

The fourth proportional to 39,845.53, 54,986.84 and 21,940.49 is: 30,277.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,845.53 : 54,986.84 = 21,940.49 : x
  2. Step 2: Convert to fraction form
    39,845.53/54,986.84 = 21,940.49/x
  3. Step 3: Cross multiply
    39,845.53x = 54,986.84 × 21,940.49
  4. Step 4: Simplify right side
    39,845.53x = 1,206,438,323.19
  5. Step 5: Solve for x
    x = 1,206,438,323.19/39,845.53
  6. Step 6: Final answer
    x = 30,277.88

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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.