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Finding the Fourth Proportional to 19,906.72, 27,472.02 and 10,954.91

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Solution

The fourth proportional to 19,906.72, 27,472.02 and 10,954.91 is: 15,118.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,906.72 : 27,472.02 = 10,954.91 : x
  2. Step 2: Convert to fraction form
    19,906.72/27,472.02 = 10,954.91/x
  3. Step 3: Cross multiply
    19,906.72x = 27,472.02 × 10,954.91
  4. Step 4: Simplify right side
    19,906.72x = 300,953,506.62
  5. Step 5: Solve for x
    x = 300,953,506.62/19,906.72
  6. Step 6: Final answer
    x = 15,118.19

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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.