Home / 21,361.62-32,042.43-8,211.54

Finding the Fourth Proportional to 21,361.62, 32,042.43 and 8,211.54

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Solution

The fourth proportional to 21,361.62, 32,042.43 and 8,211.54 is: 12,317.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,361.62 : 32,042.43 = 8,211.54 : x
  2. Step 2: Convert to fraction form
    21,361.62/32,042.43 = 8,211.54/x
  3. Step 3: Cross multiply
    21,361.62x = 32,042.43 × 8,211.54
  4. Step 4: Simplify right side
    21,361.62x = 263,117,695.64
  5. Step 5: Solve for x
    x = 263,117,695.64/21,361.62
  6. Step 6: Final answer
    x = 12,317.31

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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.