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Finding the Fourth Proportional to 12,212.16, 16,813.44 and 10,861.44

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Solution

The fourth proportional to 12,212.16, 16,813.44 and 10,861.44 is: 14,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.16 : 16,813.44 = 10,861.44 : x
  2. Step 2: Convert to fraction form
    12,212.16/16,813.44 = 10,861.44/x
  3. Step 3: Cross multiply
    12,212.16x = 16,813.44 × 10,861.44
  4. Step 4: Simplify right side
    12,212.16x = 182,618,169.75
  5. Step 5: Solve for x
    x = 182,618,169.75/12,212.16
  6. Step 6: Final answer
    x = 14,953.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.