Home / 39,481.96-54,486.56-21,578.16

Finding the Fourth Proportional to 39,481.96, 54,486.56 and 21,578.16

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Solution

The fourth proportional to 39,481.96, 54,486.56 and 21,578.16 is: 29,778.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,481.96 : 54,486.56 = 21,578.16 : x
  2. Step 2: Convert to fraction form
    39,481.96/54,486.56 = 21,578.16/x
  3. Step 3: Cross multiply
    39,481.96x = 54,486.56 × 21,578.16
  4. Step 4: Simplify right side
    39,481.96x = 1,175,719,709.53
  5. Step 5: Solve for x
    x = 1,175,719,709.53/39,481.96
  6. Step 6: Final answer
    x = 29,778.66

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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.