Home / 39,138-54,010.44-22,371.36

Finding the Fourth Proportional to 39,138, 54,010.44 and 22,371.36

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Solution

The fourth proportional to 39,138, 54,010.44 and 22,371.36 is: 30,872.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,138 : 54,010.44 = 22,371.36 : x
  2. Step 2: Convert to fraction form
    39,138/54,010.44 = 22,371.36/x
  3. Step 3: Cross multiply
    39,138x = 54,010.44 × 22,371.36
  4. Step 4: Simplify right side
    39,138x = 1,208,286,997.00
  5. Step 5: Solve for x
    x = 1,208,286,997.00/39,138
  6. Step 6: Final answer
    x = 30,872.48

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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.