Home / 20,357.12-28,093.64-11,404.70

Finding the Fourth Proportional to 20,357.12, 28,093.64 and 11,404.70

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Solution

The fourth proportional to 20,357.12, 28,093.64 and 11,404.70 is: 15,738.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,357.12 : 28,093.64 = 11,404.70 : x
  2. Step 2: Convert to fraction form
    20,357.12/28,093.64 = 11,404.70/x
  3. Step 3: Cross multiply
    20,357.12x = 28,093.64 × 11,404.70
  4. Step 4: Simplify right side
    20,357.12x = 320,399,443.97
  5. Step 5: Solve for x
    x = 320,399,443.97/20,357.12
  6. Step 6: Final answer
    x = 15,738.94

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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.