Home / 21,676.54-29,909.04-13,183.09

Finding the Fourth Proportional to 21,676.54, 29,909.04 and 13,183.09

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Solution

The fourth proportional to 21,676.54, 29,909.04 and 13,183.09 is: 18,189.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,676.54 : 29,909.04 = 13,183.09 : x
  2. Step 2: Convert to fraction form
    21,676.54/29,909.04 = 13,183.09/x
  3. Step 3: Cross multiply
    21,676.54x = 29,909.04 × 13,183.09
  4. Step 4: Simplify right side
    21,676.54x = 394,293,566.13
  5. Step 5: Solve for x
    x = 394,293,566.13/21,676.54
  6. Step 6: Final answer
    x = 18,189.88

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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.