Home / 21,211.44-31,822.20-7,360.56

Finding the Fourth Proportional to 21,211.44, 31,822.20 and 7,360.56

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Solution

The fourth proportional to 21,211.44, 31,822.20 and 7,360.56 is: 11,042.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.44 : 31,822.20 = 7,360.56 : x
  2. Step 2: Convert to fraction form
    21,211.44/31,822.20 = 7,360.56/x
  3. Step 3: Cross multiply
    21,211.44x = 31,822.20 × 7,360.56
  4. Step 4: Simplify right side
    21,211.44x = 234,229,212.43
  5. Step 5: Solve for x
    x = 234,229,212.43/21,211.44
  6. Step 6: Final answer
    x = 11,042.59

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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.