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Finding the Fourth Proportional to 22,117.20, 33,127.20 and 19,201.20

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Solution

The fourth proportional to 22,117.20, 33,127.20 and 19,201.20 is: 28,759.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,117.20 : 33,127.20 = 19,201.20 : x
  2. Step 2: Convert to fraction form
    22,117.20/33,127.20 = 19,201.20/x
  3. Step 3: Cross multiply
    22,117.20x = 33,127.20 × 19,201.20
  4. Step 4: Simplify right side
    22,117.20x = 636,081,992.64
  5. Step 5: Solve for x
    x = 636,081,992.64/22,117.20
  6. Step 6: Final answer
    x = 28,759.61

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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.