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Finding the Fourth Proportional to 22,349.71, 30,843.44 and 12,279.30

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Solution

The fourth proportional to 22,349.71, 30,843.44 and 12,279.30 is: 16,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,349.71 : 30,843.44 = 12,279.30 : x
  2. Step 2: Convert to fraction form
    22,349.71/30,843.44 = 12,279.30/x
  3. Step 3: Cross multiply
    22,349.71x = 30,843.44 × 12,279.30
  4. Step 4: Simplify right side
    22,349.71x = 378,735,852.79
  5. Step 5: Solve for x
    x = 378,735,852.79/22,349.71
  6. Step 6: Final answer
    x = 16,945.90

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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.