Home / 12,218.92-16,853.41-11,213.88

Finding the Fourth Proportional to 12,218.92, 16,853.41 and 11,213.88

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Solution

The fourth proportional to 12,218.92, 16,853.41 and 11,213.88 is: 15,467.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.92 : 16,853.41 = 11,213.88 : x
  2. Step 2: Convert to fraction form
    12,218.92/16,853.41 = 11,213.88/x
  3. Step 3: Cross multiply
    12,218.92x = 16,853.41 × 11,213.88
  4. Step 4: Simplify right side
    12,218.92x = 188,991,976.99
  5. Step 5: Solve for x
    x = 188,991,976.99/12,218.92
  6. Step 6: Final answer
    x = 15,467.16

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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.