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Finding the Fourth Proportional to 21,082.42, 29,092.62 and 11,650.42

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Solution

The fourth proportional to 21,082.42, 29,092.62 and 11,650.42 is: 16,076.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.42 : 29,092.62 = 11,650.42 : x
  2. Step 2: Convert to fraction form
    21,082.42/29,092.62 = 11,650.42/x
  3. Step 3: Cross multiply
    21,082.42x = 29,092.62 × 11,650.42
  4. Step 4: Simplify right side
    21,082.42x = 338,941,241.90
  5. Step 5: Solve for x
    x = 338,941,241.90/21,082.42
  6. Step 6: Final answer
    x = 16,076.96

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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.