Home / 38,383.56-52,968.42-21,387.78

Finding the Fourth Proportional to 38,383.56, 52,968.42 and 21,387.78

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Solution

The fourth proportional to 38,383.56, 52,968.42 and 21,387.78 is: 29,514.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,383.56 : 52,968.42 = 21,387.78 : x
  2. Step 2: Convert to fraction form
    38,383.56/52,968.42 = 21,387.78/x
  3. Step 3: Cross multiply
    38,383.56x = 52,968.42 × 21,387.78
  4. Step 4: Simplify right side
    38,383.56x = 1,132,876,913.91
  5. Step 5: Solve for x
    x = 1,132,876,913.91/38,383.56
  6. Step 6: Final answer
    x = 29,514.64

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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.