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Finding the Fourth Proportional to 11,208.48, 16,800.48 and 5,658.72

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Solution

The fourth proportional to 11,208.48, 16,800.48 and 5,658.72 is: 8,481.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,208.48 : 16,800.48 = 5,658.72 : x
  2. Step 2: Convert to fraction form
    11,208.48/16,800.48 = 5,658.72/x
  3. Step 3: Cross multiply
    11,208.48x = 16,800.48 × 5,658.72
  4. Step 4: Simplify right side
    11,208.48x = 95,069,212.19
  5. Step 5: Solve for x
    x = 95,069,212.19/11,208.48
  6. Step 6: Final answer
    x = 8,481.90

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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.