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Finding the Fourth Proportional to 18,819.50, 28,223.36 and 6,810.14

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Solution

The fourth proportional to 18,819.50, 28,223.36 and 6,810.14 is: 10,213.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.50 : 28,223.36 = 6,810.14 : x
  2. Step 2: Convert to fraction form
    18,819.50/28,223.36 = 6,810.14/x
  3. Step 3: Cross multiply
    18,819.50x = 28,223.36 × 6,810.14
  4. Step 4: Simplify right side
    18,819.50x = 192,204,857.70
  5. Step 5: Solve for x
    x = 192,204,857.70/18,819.50
  6. Step 6: Final answer
    x = 10,213.07

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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.