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Finding the Fourth Proportional to 11,105.60, 16,658.40 and 3,708.68

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Solution

The fourth proportional to 11,105.60, 16,658.40 and 3,708.68 is: 5,563.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.60 : 16,658.40 = 3,708.68 : x
  2. Step 2: Convert to fraction form
    11,105.60/16,658.40 = 3,708.68/x
  3. Step 3: Cross multiply
    11,105.60x = 16,658.40 × 3,708.68
  4. Step 4: Simplify right side
    11,105.60x = 61,780,674.91
  5. Step 5: Solve for x
    x = 61,780,674.91/11,105.60
  6. Step 6: Final answer
    x = 5,563.02

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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.