Home / 21,171.26-29,215.94-12,218.33

Finding the Fourth Proportional to 21,171.26, 29,215.94 and 12,218.33

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Solution

The fourth proportional to 21,171.26, 29,215.94 and 12,218.33 is: 16,861.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.26 : 29,215.94 = 12,218.33 : x
  2. Step 2: Convert to fraction form
    21,171.26/29,215.94 = 12,218.33/x
  3. Step 3: Cross multiply
    21,171.26x = 29,215.94 × 12,218.33
  4. Step 4: Simplify right side
    21,171.26x = 356,969,789.01
  5. Step 5: Solve for x
    x = 356,969,789.01/21,171.26
  6. Step 6: Final answer
    x = 16,861.06

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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.