Home / 20,765.82-28,656.92-11,334.44

Finding the Fourth Proportional to 20,765.82, 28,656.92 and 11,334.44

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Solution

The fourth proportional to 20,765.82, 28,656.92 and 11,334.44 is: 15,641.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.82 : 28,656.92 = 11,334.44 : x
  2. Step 2: Convert to fraction form
    20,765.82/28,656.92 = 11,334.44/x
  3. Step 3: Cross multiply
    20,765.82x = 28,656.92 × 11,334.44
  4. Step 4: Simplify right side
    20,765.82x = 324,810,140.32
  5. Step 5: Solve for x
    x = 324,810,140.32/20,765.82
  6. Step 6: Final answer
    x = 15,641.58

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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.