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Finding the Fourth Proportional to 12,133.75, 18,189.79 and 4,736.48

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Solution

The fourth proportional to 12,133.75, 18,189.79 and 4,736.48 is: 7,100.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,133.75 : 18,189.79 = 4,736.48 : x
  2. Step 2: Convert to fraction form
    12,133.75/18,189.79 = 4,736.48/x
  3. Step 3: Cross multiply
    12,133.75x = 18,189.79 × 4,736.48
  4. Step 4: Simplify right side
    12,133.75x = 86,155,576.54
  5. Step 5: Solve for x
    x = 86,155,576.54/12,133.75
  6. Step 6: Final answer
    x = 7,100.49

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