Home / 12,916.82-19,377.26-5,521.32

Finding the Fourth Proportional to 12,916.82, 19,377.26 and 5,521.32

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Solution

The fourth proportional to 12,916.82, 19,377.26 and 5,521.32 is: 8,282.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.82 : 19,377.26 = 5,521.32 : x
  2. Step 2: Convert to fraction form
    12,916.82/19,377.26 = 5,521.32/x
  3. Step 3: Cross multiply
    12,916.82x = 19,377.26 × 5,521.32
  4. Step 4: Simplify right side
    12,916.82x = 106,988,025.58
  5. Step 5: Solve for x
    x = 106,988,025.58/12,916.82
  6. Step 6: Final answer
    x = 8,282.85

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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.