Home / 20,375.19-28,119.38-11,993.31

Finding the Fourth Proportional to 20,375.19, 28,119.38 and 11,993.31

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Solution

The fourth proportional to 20,375.19, 28,119.38 and 11,993.31 is: 16,551.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.19 : 28,119.38 = 11,993.31 : x
  2. Step 2: Convert to fraction form
    20,375.19/28,119.38 = 11,993.31/x
  3. Step 3: Cross multiply
    20,375.19x = 28,119.38 × 11,993.31
  4. Step 4: Simplify right side
    20,375.19x = 337,244,441.35
  5. Step 5: Solve for x
    x = 337,244,441.35/20,375.19
  6. Step 6: Final answer
    x = 16,551.72

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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.