Home / 20,188.05-27,860.42-11,690.54

Finding the Fourth Proportional to 20,188.05, 27,860.42 and 11,690.54

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Solution

The fourth proportional to 20,188.05, 27,860.42 and 11,690.54 is: 16,133.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.05 : 27,860.42 = 11,690.54 : x
  2. Step 2: Convert to fraction form
    20,188.05/27,860.42 = 11,690.54/x
  3. Step 3: Cross multiply
    20,188.05x = 27,860.42 × 11,690.54
  4. Step 4: Simplify right side
    20,188.05x = 325,703,453.30
  5. Step 5: Solve for x
    x = 325,703,453.30/20,188.05
  6. Step 6: Final answer
    x = 16,133.48

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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.