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Finding the Fourth Proportional to 22,150.80, 30,568.20 and 13,202.80

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Solution

The fourth proportional to 22,150.80, 30,568.20 and 13,202.80 is: 18,219.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,150.80 : 30,568.20 = 13,202.80 : x
  2. Step 2: Convert to fraction form
    22,150.80/30,568.20 = 13,202.80/x
  3. Step 3: Cross multiply
    22,150.80x = 30,568.20 × 13,202.80
  4. Step 4: Simplify right side
    22,150.80x = 403,585,830.96
  5. Step 5: Solve for x
    x = 403,585,830.96/22,150.80
  6. Step 6: Final answer
    x = 18,219.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.