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Finding the Fourth Proportional to 10,704.12, 14,772.80 and 6,728.28

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Solution

The fourth proportional to 10,704.12, 14,772.80 and 6,728.28 is: 9,285.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,704.12 : 14,772.80 = 6,728.28 : x
  2. Step 2: Convert to fraction form
    10,704.12/14,772.80 = 6,728.28/x
  3. Step 3: Cross multiply
    10,704.12x = 14,772.80 × 6,728.28
  4. Step 4: Simplify right side
    10,704.12x = 99,395,534.78
  5. Step 5: Solve for x
    x = 99,395,534.78/10,704.12
  6. Step 6: Final answer
    x = 9,285.73

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