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Finding the Fourth Proportional to 8,989.11, 13,468.11 and 8,076.03

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Solution

The fourth proportional to 8,989.11, 13,468.11 and 8,076.03 is: 12,100.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.11 : 13,468.11 = 8,076.03 : x
  2. Step 2: Convert to fraction form
    8,989.11/13,468.11 = 8,076.03/x
  3. Step 3: Cross multiply
    8,989.11x = 13,468.11 × 8,076.03
  4. Step 4: Simplify right side
    8,989.11x = 108,768,860.40
  5. Step 5: Solve for x
    x = 108,768,860.40/8,989.11
  6. Step 6: Final answer
    x = 12,100.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.