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Finding the Fourth Proportional to 11,104, 16,656.64 and 5,558.72

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Solution

The fourth proportional to 11,104, 16,656.64 and 5,558.72 is: 8,338.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,104 : 16,656.64 = 5,558.72 : x
  2. Step 2: Convert to fraction form
    11,104/16,656.64 = 5,558.72/x
  3. Step 3: Cross multiply
    11,104x = 16,656.64 × 5,558.72
  4. Step 4: Simplify right side
    11,104x = 92,589,597.90
  5. Step 5: Solve for x
    x = 92,589,597.90/11,104
  6. Step 6: Final answer
    x = 8,338.40

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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.