Home / 12,108.62-18,161.55-4,209.80

Finding the Fourth Proportional to 12,108.62, 18,161.55 and 4,209.80

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Solution

The fourth proportional to 12,108.62, 18,161.55 and 4,209.80 is: 6,314.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.62 : 18,161.55 = 4,209.80 : x
  2. Step 2: Convert to fraction form
    12,108.62/18,161.55 = 4,209.80/x
  3. Step 3: Cross multiply
    12,108.62x = 18,161.55 × 4,209.80
  4. Step 4: Simplify right side
    12,108.62x = 76,456,402.38
  5. Step 5: Solve for x
    x = 76,456,402.38/12,108.62
  6. Step 6: Final answer
    x = 6,314.21

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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.