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Finding the Fourth Proportional to 18,238, 27,354.56 and 7,136.96

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Solution

The fourth proportional to 18,238, 27,354.56 and 7,136.96 is: 10,704.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,238 : 27,354.56 = 7,136.96 : x
  2. Step 2: Convert to fraction form
    18,238/27,354.56 = 7,136.96/x
  3. Step 3: Cross multiply
    18,238x = 27,354.56 × 7,136.96
  4. Step 4: Simplify right side
    18,238x = 195,228,400.54
  5. Step 5: Solve for x
    x = 195,228,400.54/18,238
  6. Step 6: Final answer
    x = 10,704.49

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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.