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Finding the Fourth Proportional to 38,979.36, 53,793.36 and 22,212

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Solution

The fourth proportional to 38,979.36, 53,793.36 and 22,212 is: 30,653.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,979.36 : 53,793.36 = 22,212 : x
  2. Step 2: Convert to fraction form
    38,979.36/53,793.36 = 22,212/x
  3. Step 3: Cross multiply
    38,979.36x = 53,793.36 × 22,212
  4. Step 4: Simplify right side
    38,979.36x = 1,194,858,112.32
  5. Step 5: Solve for x
    x = 1,194,858,112.32/38,979.36
  6. Step 6: Final answer
    x = 30,653.61

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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.