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Finding the Fourth Proportional to 12,622.70, 18,934.07 and 12,604.47

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Solution

The fourth proportional to 12,622.70, 18,934.07 and 12,604.47 is: 18,906.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.70 : 18,934.07 = 12,604.47 : x
  2. Step 2: Convert to fraction form
    12,622.70/18,934.07 = 12,604.47/x
  3. Step 3: Cross multiply
    12,622.70x = 18,934.07 × 12,604.47
  4. Step 4: Simplify right side
    12,622.70x = 238,653,854.27
  5. Step 5: Solve for x
    x = 238,653,854.27/12,622.70
  6. Step 6: Final answer
    x = 18,906.73

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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.