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Finding the Fourth Proportional to 22,419.88, 33,606.74 and 9,945.78

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Solution

The fourth proportional to 22,419.88, 33,606.74 and 9,945.78 is: 14,908.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,419.88 : 33,606.74 = 9,945.78 : x
  2. Step 2: Convert to fraction form
    22,419.88/33,606.74 = 9,945.78/x
  3. Step 3: Cross multiply
    22,419.88x = 33,606.74 × 9,945.78
  4. Step 4: Simplify right side
    22,419.88x = 334,245,141.40
  5. Step 5: Solve for x
    x = 334,245,141.40/22,419.88
  6. Step 6: Final answer
    x = 14,908.43

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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.