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Finding the Fourth Proportional to 8,789.14, 13,170.66 and 8,571.82

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Solution

The fourth proportional to 8,789.14, 13,170.66 and 8,571.82 is: 12,845.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.14 : 13,170.66 = 8,571.82 : x
  2. Step 2: Convert to fraction form
    8,789.14/13,170.66 = 8,571.82/x
  3. Step 3: Cross multiply
    8,789.14x = 13,170.66 × 8,571.82
  4. Step 4: Simplify right side
    8,789.14x = 112,896,526.80
  5. Step 5: Solve for x
    x = 112,896,526.80/8,789.14
  6. Step 6: Final answer
    x = 12,845.00

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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.