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Finding the Fourth Proportional to 11,247.70, 16,861.95 and 7,950.42

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Solution

The fourth proportional to 11,247.70, 16,861.95 and 7,950.42 is: 11,918.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,247.70 : 16,861.95 = 7,950.42 : x
  2. Step 2: Convert to fraction form
    11,247.70/16,861.95 = 7,950.42/x
  3. Step 3: Cross multiply
    11,247.70x = 16,861.95 × 7,950.42
  4. Step 4: Simplify right side
    11,247.70x = 134,059,584.52
  5. Step 5: Solve for x
    x = 134,059,584.52/11,247.70
  6. Step 6: Final answer
    x = 11,918.84

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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.