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Finding the Fourth Proportional to 22,322.78, 33,489.80 and 15,761.78

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Solution

The fourth proportional to 22,322.78, 33,489.80 and 15,761.78 is: 23,646.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,322.78 : 33,489.80 = 15,761.78 : x
  2. Step 2: Convert to fraction form
    22,322.78/33,489.80 = 15,761.78/x
  3. Step 3: Cross multiply
    22,322.78x = 33,489.80 × 15,761.78
  4. Step 4: Simplify right side
    22,322.78x = 527,858,859.84
  5. Step 5: Solve for x
    x = 527,858,859.84/22,322.78
  6. Step 6: Final answer
    x = 23,646.65

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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.