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Finding the Fourth Proportional to 22,122.70, 33,135.45 and 19,206.70

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Solution

The fourth proportional to 22,122.70, 33,135.45 and 19,206.70 is: 28,767.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,122.70 : 33,135.45 = 19,206.70 : x
  2. Step 2: Convert to fraction form
    22,122.70/33,135.45 = 19,206.70/x
  3. Step 3: Cross multiply
    22,122.70x = 33,135.45 × 19,206.70
  4. Step 4: Simplify right side
    22,122.70x = 636,422,647.52
  5. Step 5: Solve for x
    x = 636,422,647.52/22,122.70
  6. Step 6: Final answer
    x = 28,767.86

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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.