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Finding the Fourth Proportional to 21,092.56, 29,106.56 and 11,660.52

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Solution

The fourth proportional to 21,092.56, 29,106.56 and 11,660.52 is: 16,090.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,092.56 : 29,106.56 = 11,660.52 : x
  2. Step 2: Convert to fraction form
    21,092.56/29,106.56 = 11,660.52/x
  3. Step 3: Cross multiply
    21,092.56x = 29,106.56 × 11,660.52
  4. Step 4: Simplify right side
    21,092.56x = 339,397,625.01
  5. Step 5: Solve for x
    x = 339,397,625.01/21,092.56
  6. Step 6: Final answer
    x = 16,090.87

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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.