Home / 39,850.75-54,993-21,945.57

Finding the Fourth Proportional to 39,850.75, 54,993 and 21,945.57

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Solution

The fourth proportional to 39,850.75, 54,993 and 21,945.57 is: 30,284.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,850.75 : 54,993 = 21,945.57 : x
  2. Step 2: Convert to fraction form
    39,850.75/54,993 = 21,945.57/x
  3. Step 3: Cross multiply
    39,850.75x = 54,993 × 21,945.57
  4. Step 4: Simplify right side
    39,850.75x = 1,206,852,731.01
  5. Step 5: Solve for x
    x = 1,206,852,731.01/39,850.75
  6. Step 6: Final answer
    x = 30,284.32

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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.