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Finding the Fourth Proportional to 11,248, 16,879.56 and 6,748.72

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Solution

The fourth proportional to 11,248, 16,879.56 and 6,748.72 is: 10,127.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,248 : 16,879.56 = 6,748.72 : x
  2. Step 2: Convert to fraction form
    11,248/16,879.56 = 6,748.72/x
  3. Step 3: Cross multiply
    11,248x = 16,879.56 × 6,748.72
  4. Step 4: Simplify right side
    11,248x = 113,915,424.16
  5. Step 5: Solve for x
    x = 113,915,424.16/11,248
  6. Step 6: Final answer
    x = 10,127.62

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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.