Home / 12,916.25-19,371.82-3,553.87

Finding the Fourth Proportional to 12,916.25, 19,371.82 and 3,553.87

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Solution

The fourth proportional to 12,916.25, 19,371.82 and 3,553.87 is: 5,330.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.25 : 19,371.82 = 3,553.87 : x
  2. Step 2: Convert to fraction form
    12,916.25/19,371.82 = 3,553.87/x
  3. Step 3: Cross multiply
    12,916.25x = 19,371.82 × 3,553.87
  4. Step 4: Simplify right side
    12,916.25x = 68,844,929.94
  5. Step 5: Solve for x
    x = 68,844,929.94/12,916.25
  6. Step 6: Final answer
    x = 5,330.10

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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.