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Finding the Fourth Proportional to 22,127.20, 33,142.20 and 19,211.20

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Solution

The fourth proportional to 22,127.20, 33,142.20 and 19,211.20 is: 28,774.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,127.20 : 33,142.20 = 19,211.20 : x
  2. Step 2: Convert to fraction form
    22,127.20/33,142.20 = 19,211.20/x
  3. Step 3: Cross multiply
    22,127.20x = 33,142.20 × 19,211.20
  4. Step 4: Simplify right side
    22,127.20x = 636,701,432.64
  5. Step 5: Solve for x
    x = 636,701,432.64/22,127.20
  6. Step 6: Final answer
    x = 28,774.60

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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.