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Finding the Fourth Proportional to 15,273.97, 21,078.43 and 8,559.27

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Solution

The fourth proportional to 15,273.97, 21,078.43 and 8,559.27 is: 11,811.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,273.97 : 21,078.43 = 8,559.27 : x
  2. Step 2: Convert to fraction form
    15,273.97/21,078.43 = 8,559.27/x
  3. Step 3: Cross multiply
    15,273.97x = 21,078.43 × 8,559.27
  4. Step 4: Simplify right side
    15,273.97x = 180,415,952.15
  5. Step 5: Solve for x
    x = 180,415,952.15/15,273.97
  6. Step 6: Final answer
    x = 11,811.99

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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.