Home / 12,212.68-18,311.10-4,420.48

Finding the Fourth Proportional to 12,212.68, 18,311.10 and 4,420.48

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Solution

The fourth proportional to 12,212.68, 18,311.10 and 4,420.48 is: 6,627.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.68 : 18,311.10 = 4,420.48 : x
  2. Step 2: Convert to fraction form
    12,212.68/18,311.10 = 4,420.48/x
  3. Step 3: Cross multiply
    12,212.68x = 18,311.10 × 4,420.48
  4. Step 4: Simplify right side
    12,212.68x = 80,943,851.33
  5. Step 5: Solve for x
    x = 80,943,851.33/12,212.68
  6. Step 6: Final answer
    x = 6,627.85

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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.