Home / 11,443.80-17,165.70-8,309.10

Finding the Fourth Proportional to 11,443.80, 17,165.70 and 8,309.10

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Solution

The fourth proportional to 11,443.80, 17,165.70 and 8,309.10 is: 12,463.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,443.80 : 17,165.70 = 8,309.10 : x
  2. Step 2: Convert to fraction form
    11,443.80/17,165.70 = 8,309.10/x
  3. Step 3: Cross multiply
    11,443.80x = 17,165.70 × 8,309.10
  4. Step 4: Simplify right side
    11,443.80x = 142,631,517.87
  5. Step 5: Solve for x
    x = 142,631,517.87/11,443.80
  6. Step 6: Final answer
    x = 12,463.65

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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.