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Finding the Fourth Proportional to 18,223.20, 27,318.60 and 10,819.80

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Solution

The fourth proportional to 18,223.20, 27,318.60 and 10,819.80 is: 16,220.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,223.20 : 27,318.60 = 10,819.80 : x
  2. Step 2: Convert to fraction form
    18,223.20/27,318.60 = 10,819.80/x
  3. Step 3: Cross multiply
    18,223.20x = 27,318.60 × 10,819.80
  4. Step 4: Simplify right side
    18,223.20x = 295,581,788.28
  5. Step 5: Solve for x
    x = 295,581,788.28/18,223.20
  6. Step 6: Final answer
    x = 16,220.08

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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.