Home / 39,849.53-54,992.71-21,945.18

Finding the Fourth Proportional to 39,849.53, 54,992.71 and 21,945.18

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Solution

The fourth proportional to 39,849.53, 54,992.71 and 21,945.18 is: 30,284.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,849.53 : 54,992.71 = 21,945.18 : x
  2. Step 2: Convert to fraction form
    39,849.53/54,992.71 = 21,945.18/x
  3. Step 3: Cross multiply
    39,849.53x = 54,992.71 × 21,945.18
  4. Step 4: Simplify right side
    39,849.53x = 1,206,824,919.64
  5. Step 5: Solve for x
    x = 1,206,824,919.64/39,849.53
  6. Step 6: Final answer
    x = 30,284.55

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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.