Home / 20,916.33-31,367.82-6,873.09

Finding the Fourth Proportional to 20,916.33, 31,367.82 and 6,873.09

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Solution

The fourth proportional to 20,916.33, 31,367.82 and 6,873.09 is: 10,307.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.33 : 31,367.82 = 6,873.09 : x
  2. Step 2: Convert to fraction form
    20,916.33/31,367.82 = 6,873.09/x
  3. Step 3: Cross multiply
    20,916.33x = 31,367.82 × 6,873.09
  4. Step 4: Simplify right side
    20,916.33x = 215,593,849.96
  5. Step 5: Solve for x
    x = 215,593,849.96/20,916.33
  6. Step 6: Final answer
    x = 10,307.44

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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.