Home / 39,815.04-54,945.92-21,910.56

Finding the Fourth Proportional to 39,815.04, 54,945.92 and 21,910.56

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Solution

The fourth proportional to 39,815.04, 54,945.92 and 21,910.56 is: 30,237.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,815.04 : 54,945.92 = 21,910.56 : x
  2. Step 2: Convert to fraction form
    39,815.04/54,945.92 = 21,910.56/x
  3. Step 3: Cross multiply
    39,815.04x = 54,945.92 × 21,910.56
  4. Step 4: Simplify right side
    39,815.04x = 1,203,895,876.92
  5. Step 5: Solve for x
    x = 1,203,895,876.92/39,815.04
  6. Step 6: Final answer
    x = 30,237.21

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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.