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Finding the Fourth Proportional to 12,696.72, 17,525.88 and 8,718

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Solution

The fourth proportional to 12,696.72, 17,525.88 and 8,718 is: 12,033.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696.72 : 17,525.88 = 8,718 : x
  2. Step 2: Convert to fraction form
    12,696.72/17,525.88 = 8,718/x
  3. Step 3: Cross multiply
    12,696.72x = 17,525.88 × 8,718
  4. Step 4: Simplify right side
    12,696.72x = 152,790,621.84
  5. Step 5: Solve for x
    x = 152,790,621.84/12,696.72
  6. Step 6: Final answer
    x = 12,033.87

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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.