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Finding the Fourth Proportional to 21,763, 32,646.90 and 6,968.44

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Solution

The fourth proportional to 21,763, 32,646.90 and 6,968.44 is: 10,453.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,763 : 32,646.90 = 6,968.44 : x
  2. Step 2: Convert to fraction form
    21,763/32,646.90 = 6,968.44/x
  3. Step 3: Cross multiply
    21,763x = 32,646.90 × 6,968.44
  4. Step 4: Simplify right side
    21,763x = 227,497,963.84
  5. Step 5: Solve for x
    x = 227,497,963.84/21,763
  6. Step 6: Final answer
    x = 10,453.43

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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.