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Finding the Fourth Proportional to 12,166.60, 16,770.22 and 8,809.60

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Solution

The fourth proportional to 12,166.60, 16,770.22 and 8,809.60 is: 12,142.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,166.60 : 16,770.22 = 8,809.60 : x
  2. Step 2: Convert to fraction form
    12,166.60/16,770.22 = 8,809.60/x
  3. Step 3: Cross multiply
    12,166.60x = 16,770.22 × 8,809.60
  4. Step 4: Simplify right side
    12,166.60x = 147,738,930.11
  5. Step 5: Solve for x
    x = 147,738,930.11/12,166.60
  6. Step 6: Final answer
    x = 12,142.99

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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.