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Finding the Fourth Proportional to 22,076.80, 33,115.20 and 13,307.20

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Solution

The fourth proportional to 22,076.80, 33,115.20 and 13,307.20 is: 19,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,076.80 : 33,115.20 = 13,307.20 : x
  2. Step 2: Convert to fraction form
    22,076.80/33,115.20 = 13,307.20/x
  3. Step 3: Cross multiply
    22,076.80x = 33,115.20 × 13,307.20
  4. Step 4: Simplify right side
    22,076.80x = 440,670,589.44
  5. Step 5: Solve for x
    x = 440,670,589.44/22,076.80
  6. Step 6: Final answer
    x = 19,960.80

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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.