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Finding the Fourth Proportional to 20,796.56, 28,650.60 and 14,497.68

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Solution

The fourth proportional to 20,796.56, 28,650.60 and 14,497.68 is: 19,972.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.56 : 28,650.60 = 14,497.68 : x
  2. Step 2: Convert to fraction form
    20,796.56/28,650.60 = 14,497.68/x
  3. Step 3: Cross multiply
    20,796.56x = 28,650.60 × 14,497.68
  4. Step 4: Simplify right side
    20,796.56x = 415,367,230.61
  5. Step 5: Solve for x
    x = 415,367,230.61/20,796.56
  6. Step 6: Final answer
    x = 19,972.88

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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.