Home / 12,212.20-18,320.70-4,420.84

Finding the Fourth Proportional to 12,212.20, 18,320.70 and 4,420.84

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Solution

The fourth proportional to 12,212.20, 18,320.70 and 4,420.84 is: 6,632.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.20 : 18,320.70 = 4,420.84 : x
  2. Step 2: Convert to fraction form
    12,212.20/18,320.70 = 4,420.84/x
  3. Step 3: Cross multiply
    12,212.20x = 18,320.70 × 4,420.84
  4. Step 4: Simplify right side
    12,212.20x = 80,992,883.39
  5. Step 5: Solve for x
    x = 80,992,883.39/12,212.20
  6. Step 6: Final answer
    x = 6,632.13

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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.