Home / 21,974.87-32,961.28-7,181.87

Finding the Fourth Proportional to 21,974.87, 32,961.28 and 7,181.87

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Solution

The fourth proportional to 21,974.87, 32,961.28 and 7,181.87 is: 10,772.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,974.87 : 32,961.28 = 7,181.87 : x
  2. Step 2: Convert to fraction form
    21,974.87/32,961.28 = 7,181.87/x
  3. Step 3: Cross multiply
    21,974.87x = 32,961.28 × 7,181.87
  4. Step 4: Simplify right side
    21,974.87x = 236,723,458.70
  5. Step 5: Solve for x
    x = 236,723,458.70/21,974.87
  6. Step 6: Final answer
    x = 10,772.46

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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.