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Finding the Fourth Proportional to 22,620.87, 33,931.31 and 12,755.68

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Solution

The fourth proportional to 22,620.87, 33,931.31 and 12,755.68 is: 19,133.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,620.87 : 33,931.31 = 12,755.68 : x
  2. Step 2: Convert to fraction form
    22,620.87/33,931.31 = 12,755.68/x
  3. Step 3: Cross multiply
    22,620.87x = 33,931.31 × 12,755.68
  4. Step 4: Simplify right side
    22,620.87x = 432,816,783.73
  5. Step 5: Solve for x
    x = 432,816,783.73/22,620.87
  6. Step 6: Final answer
    x = 19,133.52

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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.