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Finding the Fourth Proportional to 18,999.82, 26,219.78 and 11,446.47

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Solution

The fourth proportional to 18,999.82, 26,219.78 and 11,446.47 is: 15,796.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.82 : 26,219.78 = 11,446.47 : x
  2. Step 2: Convert to fraction form
    18,999.82/26,219.78 = 11,446.47/x
  3. Step 3: Cross multiply
    18,999.82x = 26,219.78 × 11,446.47
  4. Step 4: Simplify right side
    18,999.82x = 300,123,910.87
  5. Step 5: Solve for x
    x = 300,123,910.87/18,999.82
  6. Step 6: Final answer
    x = 15,796.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.