Home / 17,108.13-25,662.92-5,421.09

Finding the Fourth Proportional to 17,108.13, 25,662.92 and 5,421.09

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Solution

The fourth proportional to 17,108.13, 25,662.92 and 5,421.09 is: 8,131.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,108.13 : 25,662.92 = 5,421.09 : x
  2. Step 2: Convert to fraction form
    17,108.13/25,662.92 = 5,421.09/x
  3. Step 3: Cross multiply
    17,108.13x = 25,662.92 × 5,421.09
  4. Step 4: Simplify right side
    17,108.13x = 139,120,971.88
  5. Step 5: Solve for x
    x = 139,120,971.88/17,108.13
  6. Step 6: Final answer
    x = 8,131.86

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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.