Home / 38,755.20-53,481.60-21,987.84

Finding the Fourth Proportional to 38,755.20, 53,481.60 and 21,987.84

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Solution

The fourth proportional to 38,755.20, 53,481.60 and 21,987.84 is: 30,342.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,755.20 : 53,481.60 = 21,987.84 : x
  2. Step 2: Convert to fraction form
    38,755.20/53,481.60 = 21,987.84/x
  3. Step 3: Cross multiply
    38,755.20x = 53,481.60 × 21,987.84
  4. Step 4: Simplify right side
    38,755.20x = 1,175,944,863.74
  5. Step 5: Solve for x
    x = 1,175,944,863.74/38,755.20
  6. Step 6: Final answer
    x = 30,342.89

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Similar ratio
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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.