Home / 12,212.70-18,321.51-4,420.92

Finding the Fourth Proportional to 12,212.70, 18,321.51 and 4,420.92

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Solution

The fourth proportional to 12,212.70, 18,321.51 and 4,420.92 is: 6,632.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.70 : 18,321.51 = 4,420.92 : x
  2. Step 2: Convert to fraction form
    12,212.70/18,321.51 = 4,420.92/x
  3. Step 3: Cross multiply
    12,212.70x = 18,321.51 × 4,420.92
  4. Step 4: Simplify right side
    12,212.70x = 80,997,929.99
  5. Step 5: Solve for x
    x = 80,997,929.99/12,212.70
  6. Step 6: Final answer
    x = 6,632.27

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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.