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Finding the Fourth Proportional to 18,131.72, 27,192.11 and 7,035.93

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Solution

The fourth proportional to 18,131.72, 27,192.11 and 7,035.93 is: 10,551.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.72 : 27,192.11 = 7,035.93 : x
  2. Step 2: Convert to fraction form
    18,131.72/27,192.11 = 7,035.93/x
  3. Step 3: Cross multiply
    18,131.72x = 27,192.11 × 7,035.93
  4. Step 4: Simplify right side
    18,131.72x = 191,321,747.33
  5. Step 5: Solve for x
    x = 191,321,747.33/18,131.72
  6. Step 6: Final answer
    x = 10,551.77

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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.