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Finding the Fourth Proportional to 11,148.80, 16,723.20 and 8,524.40

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Solution

The fourth proportional to 11,148.80, 16,723.20 and 8,524.40 is: 12,786.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.80 : 16,723.20 = 8,524.40 : x
  2. Step 2: Convert to fraction form
    11,148.80/16,723.20 = 8,524.40/x
  3. Step 3: Cross multiply
    11,148.80x = 16,723.20 × 8,524.40
  4. Step 4: Simplify right side
    11,148.80x = 142,555,246.08
  5. Step 5: Solve for x
    x = 142,555,246.08/11,148.80
  6. Step 6: Final answer
    x = 12,786.60

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Similar ratio
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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.