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Finding the Fourth Proportional to 12,819.85, 19,195.03 and 6,650.89

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Solution

The fourth proportional to 12,819.85, 19,195.03 and 6,650.89 is: 9,958.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.85 : 19,195.03 = 6,650.89 : x
  2. Step 2: Convert to fraction form
    12,819.85/19,195.03 = 6,650.89/x
  3. Step 3: Cross multiply
    12,819.85x = 19,195.03 × 6,650.89
  4. Step 4: Simplify right side
    12,819.85x = 127,664,033.08
  5. Step 5: Solve for x
    x = 127,664,033.08/12,819.85
  6. Step 6: Final answer
    x = 9,958.31

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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.