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Finding the Fourth Proportional to 9,982.88, 13,791.12 and 8,754.08

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Solution

The fourth proportional to 9,982.88, 13,791.12 and 8,754.08 is: 12,093.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,982.88 : 13,791.12 = 8,754.08 : x
  2. Step 2: Convert to fraction form
    9,982.88/13,791.12 = 8,754.08/x
  3. Step 3: Cross multiply
    9,982.88x = 13,791.12 × 8,754.08
  4. Step 4: Simplify right side
    9,982.88x = 120,728,567.77
  5. Step 5: Solve for x
    x = 120,728,567.77/9,982.88
  6. Step 6: Final answer
    x = 12,093.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.