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Finding the Fourth Proportional to 19,644.78, 27,108.81 and 10,691.97

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Solution

The fourth proportional to 19,644.78, 27,108.81 and 10,691.97 is: 14,754.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,644.78 : 27,108.81 = 10,691.97 : x
  2. Step 2: Convert to fraction form
    19,644.78/27,108.81 = 10,691.97/x
  3. Step 3: Cross multiply
    19,644.78x = 27,108.81 × 10,691.97
  4. Step 4: Simplify right side
    19,644.78x = 289,846,583.26
  5. Step 5: Solve for x
    x = 289,846,583.26/19,644.78
  6. Step 6: Final answer
    x = 14,754.38

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1.5x scale

Why These Related Problems?

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