Home / 20,742.68-28,620.06-11,789.48

Finding the Fourth Proportional to 20,742.68, 28,620.06 and 11,789.48

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Solution

The fourth proportional to 20,742.68, 28,620.06 and 11,789.48 is: 16,266.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.68 : 28,620.06 = 11,789.48 : x
  2. Step 2: Convert to fraction form
    20,742.68/28,620.06 = 11,789.48/x
  3. Step 3: Cross multiply
    20,742.68x = 28,620.06 × 11,789.48
  4. Step 4: Simplify right side
    20,742.68x = 337,415,624.97
  5. Step 5: Solve for x
    x = 337,415,624.97/20,742.68
  6. Step 6: Final answer
    x = 16,266.73

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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.