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Finding the Fourth Proportional to 18,135.48, 27,204.48 and 4,986.48

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Solution

The fourth proportional to 18,135.48, 27,204.48 and 4,986.48 is: 7,480.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.48 : 27,204.48 = 4,986.48 : x
  2. Step 2: Convert to fraction form
    18,135.48/27,204.48 = 4,986.48/x
  3. Step 3: Cross multiply
    18,135.48x = 27,204.48 × 4,986.48
  4. Step 4: Simplify right side
    18,135.48x = 135,654,595.43
  5. Step 5: Solve for x
    x = 135,654,595.43/18,135.48
  6. Step 6: Final answer
    x = 7,480.07

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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.