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Finding the Fourth Proportional to 16,216.64, 22,378.96 and 8,764.64

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Solution

The fourth proportional to 16,216.64, 22,378.96 and 8,764.64 is: 12,095.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,216.64 : 22,378.96 = 8,764.64 : x
  2. Step 2: Convert to fraction form
    16,216.64/22,378.96 = 8,764.64/x
  3. Step 3: Cross multiply
    16,216.64x = 22,378.96 × 8,764.64
  4. Step 4: Simplify right side
    16,216.64x = 196,143,527.97
  5. Step 5: Solve for x
    x = 196,143,527.97/16,216.64
  6. Step 6: Final answer
    x = 12,095.20

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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.