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Finding the Fourth Proportional to 21,371.28, 29,481.48 and 17,833.20

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Solution

The fourth proportional to 21,371.28, 29,481.48 and 17,833.20 is: 24,600.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,371.28 : 29,481.48 = 17,833.20 : x
  2. Step 2: Convert to fraction form
    21,371.28/29,481.48 = 17,833.20/x
  3. Step 3: Cross multiply
    21,371.28x = 29,481.48 × 17,833.20
  4. Step 4: Simplify right side
    21,371.28x = 525,749,129.14
  5. Step 5: Solve for x
    x = 525,749,129.14/21,371.28
  6. Step 6: Final answer
    x = 24,600.73

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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.