Home / 20,682.03-28,540.44-11,250.39

Finding the Fourth Proportional to 20,682.03, 28,540.44 and 11,250.39

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Solution

The fourth proportional to 20,682.03, 28,540.44 and 11,250.39 is: 15,525.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.03 : 28,540.44 = 11,250.39 : x
  2. Step 2: Convert to fraction form
    20,682.03/28,540.44 = 11,250.39/x
  3. Step 3: Cross multiply
    20,682.03x = 28,540.44 × 11,250.39
  4. Step 4: Simplify right side
    20,682.03x = 321,091,080.77
  5. Step 5: Solve for x
    x = 321,091,080.77/20,682.03
  6. Step 6: Final answer
    x = 15,525.12

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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.