Home / 39,027.18-53,857.19-21,121.82

Finding the Fourth Proportional to 39,027.18, 53,857.19 and 21,121.82

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Solution

The fourth proportional to 39,027.18, 53,857.19 and 21,121.82 is: 29,147.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,027.18 : 53,857.19 = 21,121.82 : x
  2. Step 2: Convert to fraction form
    39,027.18/53,857.19 = 21,121.82/x
  3. Step 3: Cross multiply
    39,027.18x = 53,857.19 × 21,121.82
  4. Step 4: Simplify right side
    39,027.18x = 1,137,561,872.89
  5. Step 5: Solve for x
    x = 1,137,561,872.89/39,027.18
  6. Step 6: Final answer
    x = 29,147.94

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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.