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Finding the Fourth Proportional to 19,793.60, 29,694.72 and 6,645.63

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Solution

The fourth proportional to 19,793.60, 29,694.72 and 6,645.63 is: 9,969.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,793.60 : 29,694.72 = 6,645.63 : x
  2. Step 2: Convert to fraction form
    19,793.60/29,694.72 = 6,645.63/x
  3. Step 3: Cross multiply
    19,793.60x = 29,694.72 × 6,645.63
  4. Step 4: Simplify right side
    19,793.60x = 197,340,035.64
  5. Step 5: Solve for x
    x = 197,340,035.64/19,793.60
  6. Step 6: Final answer
    x = 9,969.89

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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.