Home / 39,849.66-54,991.70-21,945

Finding the Fourth Proportional to 39,849.66, 54,991.70 and 21,945

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Solution

The fourth proportional to 39,849.66, 54,991.70 and 21,945 is: 30,283.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,849.66 : 54,991.70 = 21,945 : x
  2. Step 2: Convert to fraction form
    39,849.66/54,991.70 = 21,945/x
  3. Step 3: Cross multiply
    39,849.66x = 54,991.70 × 21,945
  4. Step 4: Simplify right side
    39,849.66x = 1,206,792,856.50
  5. Step 5: Solve for x
    x = 1,206,792,856.50/39,849.66
  6. Step 6: Final answer
    x = 30,283.64

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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.