Home / 20,098.81-27,735.26-11,145.79

Finding the Fourth Proportional to 20,098.81, 27,735.26 and 11,145.79

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Solution

The fourth proportional to 20,098.81, 27,735.26 and 11,145.79 is: 15,380.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,098.81 : 27,735.26 = 11,145.79 : x
  2. Step 2: Convert to fraction form
    20,098.81/27,735.26 = 11,145.79/x
  3. Step 3: Cross multiply
    20,098.81x = 27,735.26 × 11,145.79
  4. Step 4: Simplify right side
    20,098.81x = 309,131,383.56
  5. Step 5: Solve for x
    x = 309,131,383.56/20,098.81
  6. Step 6: Final answer
    x = 15,380.58

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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.