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Finding the Fourth Proportional to 19,449.78, 29,180.81 and 6,969.49

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Solution

The fourth proportional to 19,449.78, 29,180.81 and 6,969.49 is: 10,456.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,449.78 : 29,180.81 = 6,969.49 : x
  2. Step 2: Convert to fraction form
    19,449.78/29,180.81 = 6,969.49/x
  3. Step 3: Cross multiply
    19,449.78x = 29,180.81 × 6,969.49
  4. Step 4: Simplify right side
    19,449.78x = 203,375,363.49
  5. Step 5: Solve for x
    x = 203,375,363.49/19,449.78
  6. Step 6: Final answer
    x = 10,456.44

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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.