Home / 20,519.70-28,317.38-11,566.41

Finding the Fourth Proportional to 20,519.70, 28,317.38 and 11,566.41

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Solution

The fourth proportional to 20,519.70, 28,317.38 and 11,566.41 is: 15,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.70 : 28,317.38 = 11,566.41 : x
  2. Step 2: Convert to fraction form
    20,519.70/28,317.38 = 11,566.41/x
  3. Step 3: Cross multiply
    20,519.70x = 28,317.38 × 11,566.41
  4. Step 4: Simplify right side
    20,519.70x = 327,530,369.37
  5. Step 5: Solve for x
    x = 327,530,369.37/20,519.70
  6. Step 6: Final answer
    x = 15,961.75

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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.