Home / 20,188.05-27,859.68-11,235.93

Finding the Fourth Proportional to 20,188.05, 27,859.68 and 11,235.93

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Solution

The fourth proportional to 20,188.05, 27,859.68 and 11,235.93 is: 15,505.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.05 : 27,859.68 = 11,235.93 : x
  2. Step 2: Convert to fraction form
    20,188.05/27,859.68 = 11,235.93/x
  3. Step 3: Cross multiply
    20,188.05x = 27,859.68 × 11,235.93
  4. Step 4: Simplify right side
    20,188.05x = 313,029,414.30
  5. Step 5: Solve for x
    x = 313,029,414.30/20,188.05
  6. Step 6: Final answer
    x = 15,505.68

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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.