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Finding the Fourth Proportional to 22,276.80, 33,432 and 15,240

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Solution

The fourth proportional to 22,276.80, 33,432 and 15,240 is: 22,871.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,276.80 : 33,432 = 15,240 : x
  2. Step 2: Convert to fraction form
    22,276.80/33,432 = 15,240/x
  3. Step 3: Cross multiply
    22,276.80x = 33,432 × 15,240
  4. Step 4: Simplify right side
    22,276.80x = 509,503,680
  5. Step 5: Solve for x
    x = 509,503,680/22,276.80
  6. Step 6: Final answer
    x = 22,871.49

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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.