Home / 12,212.57-18,320.99-4,419.56

Finding the Fourth Proportional to 12,212.57, 18,320.99 and 4,419.56

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Solution

The fourth proportional to 12,212.57, 18,320.99 and 4,419.56 is: 6,630.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.57 : 18,320.99 = 4,419.56 : x
  2. Step 2: Convert to fraction form
    12,212.57/18,320.99 = 4,419.56/x
  3. Step 3: Cross multiply
    12,212.57x = 18,320.99 × 4,419.56
  4. Step 4: Simplify right side
    12,212.57x = 80,970,738.27
  5. Step 5: Solve for x
    x = 80,970,738.27/12,212.57
  6. Step 6: Final answer
    x = 6,630.11

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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.