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Finding the Fourth Proportional to 15,217.41, 20,999.91 and 8,502.96

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Solution

The fourth proportional to 15,217.41, 20,999.91 and 8,502.96 is: 11,734.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,217.41 : 20,999.91 = 8,502.96 : x
  2. Step 2: Convert to fraction form
    15,217.41/20,999.91 = 8,502.96/x
  3. Step 3: Cross multiply
    15,217.41x = 20,999.91 × 8,502.96
  4. Step 4: Simplify right side
    15,217.41x = 178,561,394.73
  5. Step 5: Solve for x
    x = 178,561,394.73/15,217.41
  6. Step 6: Final answer
    x = 11,734.02

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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.