Home / 39,845.52-54,986.42-21,940.18

Finding the Fourth Proportional to 39,845.52, 54,986.42 and 21,940.18

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Solution

The fourth proportional to 39,845.52, 54,986.42 and 21,940.18 is: 30,277.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,845.52 : 54,986.42 = 21,940.18 : x
  2. Step 2: Convert to fraction form
    39,845.52/54,986.42 = 21,940.18/x
  3. Step 3: Cross multiply
    39,845.52x = 54,986.42 × 21,940.18
  4. Step 4: Simplify right side
    39,845.52x = 1,206,411,952.36
  5. Step 5: Solve for x
    x = 1,206,411,952.36/39,845.52
  6. Step 6: Final answer
    x = 30,277.23

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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.