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Finding the Fourth Proportional to 11,288.64, 16,932.40 and 4,268.64

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Solution

The fourth proportional to 11,288.64, 16,932.40 and 4,268.64 is: 6,402.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,288.64 : 16,932.40 = 4,268.64 : x
  2. Step 2: Convert to fraction form
    11,288.64/16,932.40 = 4,268.64/x
  3. Step 3: Cross multiply
    11,288.64x = 16,932.40 × 4,268.64
  4. Step 4: Simplify right side
    11,288.64x = 72,278,319.94
  5. Step 5: Solve for x
    x = 72,278,319.94/11,288.64
  6. Step 6: Final answer
    x = 6,402.75

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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.