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Finding the Fourth Proportional to 12,696.80, 19,020 and 8,467.04

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Solution

The fourth proportional to 12,696.80, 19,020 and 8,467.04 is: 12,683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696.80 : 19,020 = 8,467.04 : x
  2. Step 2: Convert to fraction form
    12,696.80/19,020 = 8,467.04/x
  3. Step 3: Cross multiply
    12,696.80x = 19,020 × 8,467.04
  4. Step 4: Simplify right side
    12,696.80x = 161,043,100.80
  5. Step 5: Solve for x
    x = 161,043,100.80/12,696.80
  6. Step 6: Final answer
    x = 12,683.76

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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.