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Finding the Fourth Proportional to 11,331.97, 15,636.99 and 6,619

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Solution

The fourth proportional to 11,331.97, 15,636.99 and 6,619 is: 9,133.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.97 : 15,636.99 = 6,619 : x
  2. Step 2: Convert to fraction form
    11,331.97/15,636.99 = 6,619/x
  3. Step 3: Cross multiply
    11,331.97x = 15,636.99 × 6,619
  4. Step 4: Simplify right side
    11,331.97x = 103,501,236.81
  5. Step 5: Solve for x
    x = 103,501,236.81/11,331.97
  6. Step 6: Final answer
    x = 9,133.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.