Home / 12,227.31-18,338.03-5,647.17

Finding the Fourth Proportional to 12,227.31, 18,338.03 and 5,647.17

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Solution

The fourth proportional to 12,227.31, 18,338.03 and 5,647.17 is: 8,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,227.31 : 18,338.03 = 5,647.17 : x
  2. Step 2: Convert to fraction form
    12,227.31/18,338.03 = 5,647.17/x
  3. Step 3: Cross multiply
    12,227.31x = 18,338.03 × 5,647.17
  4. Step 4: Simplify right side
    12,227.31x = 103,557,944.64
  5. Step 5: Solve for x
    x = 103,557,944.64/12,227.31
  6. Step 6: Final answer
    x = 8,469.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.