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Finding the Fourth Proportional to 19,911.28, 27,476.15 and 11,844.49

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Solution

The fourth proportional to 19,911.28, 27,476.15 and 11,844.49 is: 16,344.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,911.28 : 27,476.15 = 11,844.49 : x
  2. Step 2: Convert to fraction form
    19,911.28/27,476.15 = 11,844.49/x
  3. Step 3: Cross multiply
    19,911.28x = 27,476.15 × 11,844.49
  4. Step 4: Simplify right side
    19,911.28x = 325,440,983.91
  5. Step 5: Solve for x
    x = 325,440,983.91/19,911.28
  6. Step 6: Final answer
    x = 16,344.55

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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.