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Finding the Fourth Proportional to 36,287.55, 54,398.52 and 12,908.52

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Solution

The fourth proportional to 36,287.55, 54,398.52 and 12,908.52 is: 19,351.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,287.55 : 54,398.52 = 12,908.52 : x
  2. Step 2: Convert to fraction form
    36,287.55/54,398.52 = 12,908.52/x
  3. Step 3: Cross multiply
    36,287.55x = 54,398.52 × 12,908.52
  4. Step 4: Simplify right side
    36,287.55x = 702,204,383.39
  5. Step 5: Solve for x
    x = 702,204,383.39/36,287.55
  6. Step 6: Final answer
    x = 19,351.11

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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.