Home / 39,845.12-54,986.13-21,940.16

Finding the Fourth Proportional to 39,845.12, 54,986.13 and 21,940.16

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Solution

The fourth proportional to 39,845.12, 54,986.13 and 21,940.16 is: 30,277.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,845.12 : 54,986.13 = 21,940.16 : x
  2. Step 2: Convert to fraction form
    39,845.12/54,986.13 = 21,940.16/x
  3. Step 3: Cross multiply
    39,845.12x = 54,986.13 × 21,940.16
  4. Step 4: Simplify right side
    39,845.12x = 1,206,404,215.05
  5. Step 5: Solve for x
    x = 1,206,404,215.05/39,845.12
  6. Step 6: Final answer
    x = 30,277.34

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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.