Home / 21,830.24-32,738.88-7,976

Finding the Fourth Proportional to 21,830.24, 32,738.88 and 7,976

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Solution

The fourth proportional to 21,830.24, 32,738.88 and 7,976 is: 11,961.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,830.24 : 32,738.88 = 7,976 : x
  2. Step 2: Convert to fraction form
    21,830.24/32,738.88 = 7,976/x
  3. Step 3: Cross multiply
    21,830.24x = 32,738.88 × 7,976
  4. Step 4: Simplify right side
    21,830.24x = 261,125,306.88
  5. Step 5: Solve for x
    x = 261,125,306.88/21,830.24
  6. Step 6: Final answer
    x = 11,961.63

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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.