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Finding the Fourth Proportional to 11,940.75, 17,918.82 and 5,015.25

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Solution

The fourth proportional to 11,940.75, 17,918.82 and 5,015.25 is: 7,526.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,940.75 : 17,918.82 = 5,015.25 : x
  2. Step 2: Convert to fraction form
    11,940.75/17,918.82 = 5,015.25/x
  3. Step 3: Cross multiply
    11,940.75x = 17,918.82 × 5,015.25
  4. Step 4: Simplify right side
    11,940.75x = 89,867,362.01
  5. Step 5: Solve for x
    x = 89,867,362.01/11,940.75
  6. Step 6: Final answer
    x = 7,526.11

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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.