Home / 12,436.62-17,157.09-8,182.21

Finding the Fourth Proportional to 12,436.62, 17,157.09 and 8,182.21

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Solution

The fourth proportional to 12,436.62, 17,157.09 and 8,182.21 is: 11,287.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.62 : 17,157.09 = 8,182.21 : x
  2. Step 2: Convert to fraction form
    12,436.62/17,157.09 = 8,182.21/x
  3. Step 3: Cross multiply
    12,436.62x = 17,157.09 × 8,182.21
  4. Step 4: Simplify right side
    12,436.62x = 140,382,913.37
  5. Step 5: Solve for x
    x = 140,382,913.37/12,436.62
  6. Step 6: Final answer
    x = 11,287.87

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Double scale
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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.