Home / 39,825.56-54,957.99-21,920.58

Finding the Fourth Proportional to 39,825.56, 54,957.99 and 21,920.58

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Solution

The fourth proportional to 39,825.56, 54,957.99 and 21,920.58 is: 30,249.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,825.56 : 54,957.99 = 21,920.58 : x
  2. Step 2: Convert to fraction form
    39,825.56/54,957.99 = 21,920.58/x
  3. Step 3: Cross multiply
    39,825.56x = 54,957.99 × 21,920.58
  4. Step 4: Simplify right side
    39,825.56x = 1,204,711,016.43
  5. Step 5: Solve for x
    x = 1,204,711,016.43/39,825.56
  6. Step 6: Final answer
    x = 30,249.69

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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.