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Finding the Fourth Proportional to 18,451.99, 27,677.87 and 15,945.56

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Solution

The fourth proportional to 18,451.99, 27,677.87 and 15,945.56 is: 23,918.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,451.99 : 27,677.87 = 15,945.56 : x
  2. Step 2: Convert to fraction form
    18,451.99/27,677.87 = 15,945.56/x
  3. Step 3: Cross multiply
    18,451.99x = 27,677.87 × 15,945.56
  4. Step 4: Simplify right side
    18,451.99x = 441,339,082.23
  5. Step 5: Solve for x
    x = 441,339,082.23/18,451.99
  6. Step 6: Final answer
    x = 23,918.24

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Similar ratio
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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.