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Finding the Fourth Proportional to 18,210.20, 27,311.70 and 8,850.20

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Solution

The fourth proportional to 18,210.20, 27,311.70 and 8,850.20 is: 13,273.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,210.20 : 27,311.70 = 8,850.20 : x
  2. Step 2: Convert to fraction form
    18,210.20/27,311.70 = 8,850.20/x
  3. Step 3: Cross multiply
    18,210.20x = 27,311.70 × 8,850.20
  4. Step 4: Simplify right side
    18,210.20x = 241,714,007.34
  5. Step 5: Solve for x
    x = 241,714,007.34/18,210.20
  6. Step 6: Final answer
    x = 13,273.55

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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.