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Finding the Fourth Proportional to 22,339.67, 30,839.25 and 12,906.41

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Solution

The fourth proportional to 22,339.67, 30,839.25 and 12,906.41 is: 17,816.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,339.67 : 30,839.25 = 12,906.41 : x
  2. Step 2: Convert to fraction form
    22,339.67/30,839.25 = 12,906.41/x
  3. Step 3: Cross multiply
    22,339.67x = 30,839.25 × 12,906.41
  4. Step 4: Simplify right side
    22,339.67x = 398,023,927.49
  5. Step 5: Solve for x
    x = 398,023,927.49/22,339.67
  6. Step 6: Final answer
    x = 17,816.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.