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Finding the Fourth Proportional to 11,911.15, 17,863.07 and 8,236.99

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Solution

The fourth proportional to 11,911.15, 17,863.07 and 8,236.99 is: 12,352.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,911.15 : 17,863.07 = 8,236.99 : x
  2. Step 2: Convert to fraction form
    11,911.15/17,863.07 = 8,236.99/x
  3. Step 3: Cross multiply
    11,911.15x = 17,863.07 × 8,236.99
  4. Step 4: Simplify right side
    11,911.15x = 147,137,887.77
  5. Step 5: Solve for x
    x = 147,137,887.77/11,911.15
  6. Step 6: Final answer
    x = 12,352.95

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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.