Home / 12,121.98-18,180.91-3,354.85

Finding the Fourth Proportional to 12,121.98, 18,180.91 and 3,354.85

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Solution

The fourth proportional to 12,121.98, 18,180.91 and 3,354.85 is: 5,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.98 : 18,180.91 = 3,354.85 : x
  2. Step 2: Convert to fraction form
    12,121.98/18,180.91 = 3,354.85/x
  3. Step 3: Cross multiply
    12,121.98x = 18,180.91 × 3,354.85
  4. Step 4: Simplify right side
    12,121.98x = 60,994,135.01
  5. Step 5: Solve for x
    x = 60,994,135.01/12,121.98
  6. Step 6: Final answer
    x = 5,031.70

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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.