Home / 39,854.52-54,999.36-21,949.92

Finding the Fourth Proportional to 39,854.52, 54,999.36 and 21,949.92

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Solution

The fourth proportional to 39,854.52, 54,999.36 and 21,949.92 is: 30,290.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,854.52 : 54,999.36 = 21,949.92 : x
  2. Step 2: Convert to fraction form
    39,854.52/54,999.36 = 21,949.92/x
  3. Step 3: Cross multiply
    39,854.52x = 54,999.36 × 21,949.92
  4. Step 4: Simplify right side
    39,854.52x = 1,207,231,552.05
  5. Step 5: Solve for x
    x = 1,207,231,552.05/39,854.52
  6. Step 6: Final answer
    x = 30,290.96

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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.