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Finding the Fourth Proportional to 15,801.82, 21,808.32 and 9,087.76

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Solution

The fourth proportional to 15,801.82, 21,808.32 and 9,087.76 is: 12,542.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,801.82 : 21,808.32 = 9,087.76 : x
  2. Step 2: Convert to fraction form
    15,801.82/21,808.32 = 9,087.76/x
  3. Step 3: Cross multiply
    15,801.82x = 21,808.32 × 9,087.76
  4. Step 4: Simplify right side
    15,801.82x = 198,188,778.16
  5. Step 5: Solve for x
    x = 198,188,778.16/15,801.82
  6. Step 6: Final answer
    x = 12,542.15

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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.