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Finding the Fourth Proportional to 22,295.91, 30,768.69 and 13,343.79

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Solution

The fourth proportional to 22,295.91, 30,768.69 and 13,343.79 is: 18,414.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,295.91 : 30,768.69 = 13,343.79 : x
  2. Step 2: Convert to fraction form
    22,295.91/30,768.69 = 13,343.79/x
  3. Step 3: Cross multiply
    22,295.91x = 30,768.69 × 13,343.79
  4. Step 4: Simplify right side
    22,295.91x = 410,570,937.94
  5. Step 5: Solve for x
    x = 410,570,937.94/22,295.91
  6. Step 6: Final answer
    x = 18,414.63

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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.