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Finding the Fourth Proportional to 11,311.79, 16,936.03 and 8,529.76

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Solution

The fourth proportional to 11,311.79, 16,936.03 and 8,529.76 is: 12,770.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,311.79 : 16,936.03 = 8,529.76 : x
  2. Step 2: Convert to fraction form
    11,311.79/16,936.03 = 8,529.76/x
  3. Step 3: Cross multiply
    11,311.79x = 16,936.03 × 8,529.76
  4. Step 4: Simplify right side
    11,311.79x = 144,460,143.92
  5. Step 5: Solve for x
    x = 144,460,143.92/11,311.79
  6. Step 6: Final answer
    x = 12,770.76

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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.