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Finding the Fourth Proportional to 22,429.68, 33,648.12 and 7,639.44

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Solution

The fourth proportional to 22,429.68, 33,648.12 and 7,639.44 is: 11,460.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,429.68 : 33,648.12 = 7,639.44 : x
  2. Step 2: Convert to fraction form
    22,429.68/33,648.12 = 7,639.44/x
  3. Step 3: Cross multiply
    22,429.68x = 33,648.12 × 7,639.44
  4. Step 4: Simplify right side
    22,429.68x = 257,052,793.85
  5. Step 5: Solve for x
    x = 257,052,793.85/22,429.68
  6. Step 6: Final answer
    x = 11,460.39

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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.