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Finding the Fourth Proportional to 21,842.72, 32,764.11 and 9,361.77

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Solution

The fourth proportional to 21,842.72, 32,764.11 and 9,361.77 is: 14,042.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,842.72 : 32,764.11 = 9,361.77 : x
  2. Step 2: Convert to fraction form
    21,842.72/32,764.11 = 9,361.77/x
  3. Step 3: Cross multiply
    21,842.72x = 32,764.11 × 9,361.77
  4. Step 4: Simplify right side
    21,842.72x = 306,729,898.25
  5. Step 5: Solve for x
    x = 306,729,898.25/21,842.72
  6. Step 6: Final answer
    x = 14,042.66

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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.