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Finding the Fourth Proportional to 21,041.28, 29,035.74 and 11,609.82

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Solution

The fourth proportional to 21,041.28, 29,035.74 and 11,609.82 is: 16,020.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.28 : 29,035.74 = 11,609.82 : x
  2. Step 2: Convert to fraction form
    21,041.28/29,035.74 = 11,609.82/x
  3. Step 3: Cross multiply
    21,041.28x = 29,035.74 × 11,609.82
  4. Step 4: Simplify right side
    21,041.28x = 337,099,714.97
  5. Step 5: Solve for x
    x = 337,099,714.97/21,041.28
  6. Step 6: Final answer
    x = 16,020.87

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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.