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Finding the Fourth Proportional to 18,141.85, 27,212.96 and 11,941.21

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Solution

The fourth proportional to 18,141.85, 27,212.96 and 11,941.21 is: 17,911.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,141.85 : 27,212.96 = 11,941.21 : x
  2. Step 2: Convert to fraction form
    18,141.85/27,212.96 = 11,941.21/x
  3. Step 3: Cross multiply
    18,141.85x = 27,212.96 × 11,941.21
  4. Step 4: Simplify right side
    18,141.85x = 324,955,670.08
  5. Step 5: Solve for x
    x = 324,955,670.08/18,141.85
  6. Step 6: Final answer
    x = 17,911.94

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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.