Home / 39,442.78-54,431.31-21,537.92

Finding the Fourth Proportional to 39,442.78, 54,431.31 and 21,537.92

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Solution

The fourth proportional to 39,442.78, 54,431.31 and 21,537.92 is: 29,722.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,442.78 : 54,431.31 = 21,537.92 : x
  2. Step 2: Convert to fraction form
    39,442.78/54,431.31 = 21,537.92/x
  3. Step 3: Cross multiply
    39,442.78x = 54,431.31 × 21,537.92
  4. Step 4: Simplify right side
    39,442.78x = 1,172,337,200.28
  5. Step 5: Solve for x
    x = 1,172,337,200.28/39,442.78
  6. Step 6: Final answer
    x = 29,722.48

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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.