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Finding the Fourth Proportional to 11,236.80, 16,871.40 and 8,482.80

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Solution

The fourth proportional to 11,236.80, 16,871.40 and 8,482.80 is: 12,736.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,236.80 : 16,871.40 = 8,482.80 : x
  2. Step 2: Convert to fraction form
    11,236.80/16,871.40 = 8,482.80/x
  3. Step 3: Cross multiply
    11,236.80x = 16,871.40 × 8,482.80
  4. Step 4: Simplify right side
    11,236.80x = 143,116,711.92
  5. Step 5: Solve for x
    x = 143,116,711.92/11,236.80
  6. Step 6: Final answer
    x = 12,736.43

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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.