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Finding the Fourth Proportional to 18,571.12, 27,845.16 and 8,706.16

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Solution

The fourth proportional to 18,571.12, 27,845.16 and 8,706.16 is: 13,053.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.12 : 27,845.16 = 8,706.16 : x
  2. Step 2: Convert to fraction form
    18,571.12/27,845.16 = 8,706.16/x
  3. Step 3: Cross multiply
    18,571.12x = 27,845.16 × 8,706.16
  4. Step 4: Simplify right side
    18,571.12x = 242,424,418.19
  5. Step 5: Solve for x
    x = 242,424,418.19/18,571.12
  6. Step 6: Final answer
    x = 13,053.84

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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.