Home / 10,805.45-16,209.77-3,408.23

Finding the Fourth Proportional to 10,805.45, 16,209.77 and 3,408.23

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Solution

The fourth proportional to 10,805.45, 16,209.77 and 3,408.23 is: 5,112.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,805.45 : 16,209.77 = 3,408.23 : x
  2. Step 2: Convert to fraction form
    10,805.45/16,209.77 = 3,408.23/x
  3. Step 3: Cross multiply
    10,805.45x = 16,209.77 × 3,408.23
  4. Step 4: Simplify right side
    10,805.45x = 55,246,575.88
  5. Step 5: Solve for x
    x = 55,246,575.88/10,805.45
  6. Step 6: Final answer
    x = 5,112.84

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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.