Home / 21,961.28-32,949.24-7,170.80

Finding the Fourth Proportional to 21,961.28, 32,949.24 and 7,170.80

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Solution

The fourth proportional to 21,961.28, 32,949.24 and 7,170.80 is: 10,758.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.28 : 32,949.24 = 7,170.80 : x
  2. Step 2: Convert to fraction form
    21,961.28/32,949.24 = 7,170.80/x
  3. Step 3: Cross multiply
    21,961.28x = 32,949.24 × 7,170.80
  4. Step 4: Simplify right side
    21,961.28x = 236,272,410.19
  5. Step 5: Solve for x
    x = 236,272,410.19/21,961.28
  6. Step 6: Final answer
    x = 10,758.59

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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.