Home / 10,220.90-15,327.70-3,198.81

Finding the Fourth Proportional to 10,220.90, 15,327.70 and 3,198.81

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Solution

The fourth proportional to 10,220.90, 15,327.70 and 3,198.81 is: 4,797.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.90 : 15,327.70 = 3,198.81 : x
  2. Step 2: Convert to fraction form
    10,220.90/15,327.70 = 3,198.81/x
  3. Step 3: Cross multiply
    10,220.90x = 15,327.70 × 3,198.81
  4. Step 4: Simplify right side
    10,220.90x = 49,030,363.30
  5. Step 5: Solve for x
    x = 49,030,363.30/10,220.90
  6. Step 6: Final answer
    x = 4,797.07

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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.