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Finding the Fourth Proportional to 29,855.25, 41,200.25 and 17,280

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Solution

The fourth proportional to 29,855.25, 41,200.25 and 17,280 is: 23,846.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,855.25 : 41,200.25 = 17,280 : x
  2. Step 2: Convert to fraction form
    29,855.25/41,200.25 = 17,280/x
  3. Step 3: Cross multiply
    29,855.25x = 41,200.25 × 17,280
  4. Step 4: Simplify right side
    29,855.25x = 711,940,233.60
  5. Step 5: Solve for x
    x = 711,940,233.60/29,855.25
  6. Step 6: Final answer
    x = 23,846.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.