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Finding the Fourth Proportional to 12,930, 19,395 and 3,696

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Solution

The fourth proportional to 12,930, 19,395 and 3,696 is: 5,544

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930 : 19,395 = 3,696 : x
  2. Step 2: Convert to fraction form
    12,930/19,395 = 3,696/x
  3. Step 3: Cross multiply
    12,930x = 19,395 × 3,696
  4. Step 4: Simplify right side
    12,930x = 71,683,920
  5. Step 5: Solve for x
    x = 71,683,920/12,930
  6. Step 6: Final answer
    x = 5,544

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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.