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Finding the Fourth Proportional to 11,147.92, 16,710.96 and 6,219.92

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Solution

The fourth proportional to 11,147.92, 16,710.96 and 6,219.92 is: 9,323.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.92 : 16,710.96 = 6,219.92 : x
  2. Step 2: Convert to fraction form
    11,147.92/16,710.96 = 6,219.92/x
  3. Step 3: Cross multiply
    11,147.92x = 16,710.96 × 6,219.92
  4. Step 4: Simplify right side
    11,147.92x = 103,940,834.32
  5. Step 5: Solve for x
    x = 103,940,834.32/11,147.92
  6. Step 6: Final answer
    x = 9,323.79

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1.5x scale

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.