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Finding the Fourth Proportional to 11,235.30, 16,857.39 and 7,074.54

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Solution

The fourth proportional to 11,235.30, 16,857.39 and 7,074.54 is: 10,614.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,235.30 : 16,857.39 = 7,074.54 : x
  2. Step 2: Convert to fraction form
    11,235.30/16,857.39 = 7,074.54/x
  3. Step 3: Cross multiply
    11,235.30x = 16,857.39 × 7,074.54
  4. Step 4: Simplify right side
    11,235.30x = 119,258,279.85
  5. Step 5: Solve for x
    x = 119,258,279.85/11,235.30
  6. Step 6: Final answer
    x = 10,614.61

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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.