Home / 20,135.05-27,789.99-11,636

Finding the Fourth Proportional to 20,135.05, 27,789.99 and 11,636

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Solution

The fourth proportional to 20,135.05, 27,789.99 and 11,636 is: 16,059.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.05 : 27,789.99 = 11,636 : x
  2. Step 2: Convert to fraction form
    20,135.05/27,789.99 = 11,636/x
  3. Step 3: Cross multiply
    20,135.05x = 27,789.99 × 11,636
  4. Step 4: Simplify right side
    20,135.05x = 323,364,323.64
  5. Step 5: Solve for x
    x = 323,364,323.64/20,135.05
  6. Step 6: Final answer
    x = 16,059.77

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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.