Home / 39,480.78-54,481.18-21,575.94

Finding the Fourth Proportional to 39,480.78, 54,481.18 and 21,575.94

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Solution

The fourth proportional to 39,480.78, 54,481.18 and 21,575.94 is: 29,773.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,480.78 : 54,481.18 = 21,575.94 : x
  2. Step 2: Convert to fraction form
    39,480.78/54,481.18 = 21,575.94/x
  3. Step 3: Cross multiply
    39,480.78x = 54,481.18 × 21,575.94
  4. Step 4: Simplify right side
    39,480.78x = 1,175,482,670.81
  5. Step 5: Solve for x
    x = 1,175,482,670.81/39,480.78
  6. Step 6: Final answer
    x = 29,773.54

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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.