Home / 21,972.87-32,961.33-7,181.87

Finding the Fourth Proportional to 21,972.87, 32,961.33 and 7,181.87

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Solution

The fourth proportional to 21,972.87, 32,961.33 and 7,181.87 is: 10,773.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.87 : 32,961.33 = 7,181.87 : x
  2. Step 2: Convert to fraction form
    21,972.87/32,961.33 = 7,181.87/x
  3. Step 3: Cross multiply
    21,972.87x = 32,961.33 × 7,181.87
  4. Step 4: Simplify right side
    21,972.87x = 236,723,822.28
  5. Step 5: Solve for x
    x = 236,723,822.28/21,972.87
  6. Step 6: Final answer
    x = 10,773.46

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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.