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Finding the Fourth Proportional to 10,722, 14,796.40 and 6,996

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Solution

The fourth proportional to 10,722, 14,796.40 and 6,996 is: 9,654.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,722 : 14,796.40 = 6,996 : x
  2. Step 2: Convert to fraction form
    10,722/14,796.40 = 6,996/x
  3. Step 3: Cross multiply
    10,722x = 14,796.40 × 6,996
  4. Step 4: Simplify right side
    10,722x = 103,515,614.40
  5. Step 5: Solve for x
    x = 103,515,614.40/10,722
  6. Step 6: Final answer
    x = 9,654.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.