Home / 12,209.98-18,313.70-8,286.44

Finding the Fourth Proportional to 12,209.98, 18,313.70 and 8,286.44

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Solution

The fourth proportional to 12,209.98, 18,313.70 and 8,286.44 is: 12,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.98 : 18,313.70 = 8,286.44 : x
  2. Step 2: Convert to fraction form
    12,209.98/18,313.70 = 8,286.44/x
  3. Step 3: Cross multiply
    12,209.98x = 18,313.70 × 8,286.44
  4. Step 4: Simplify right side
    12,209.98x = 151,755,376.23
  5. Step 5: Solve for x
    x = 151,755,376.23/12,209.98
  6. Step 6: Final answer
    x = 12,428.80

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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.