Home / 20,682.08-28,540.44-11,250.64

Finding the Fourth Proportional to 20,682.08, 28,540.44 and 11,250.64

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Solution

The fourth proportional to 20,682.08, 28,540.44 and 11,250.64 is: 15,525.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.08 : 28,540.44 = 11,250.64 : x
  2. Step 2: Convert to fraction form
    20,682.08/28,540.44 = 11,250.64/x
  3. Step 3: Cross multiply
    20,682.08x = 28,540.44 × 11,250.64
  4. Step 4: Simplify right side
    20,682.08x = 321,098,144.53
  5. Step 5: Solve for x
    x = 321,098,144.53/20,682.08
  6. Step 6: Final answer
    x = 15,525.43

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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.