Home / 20,015.78-27,620.43-11,063.30

Finding the Fourth Proportional to 20,015.78, 27,620.43 and 11,063.30

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Solution

The fourth proportional to 20,015.78, 27,620.43 and 11,063.30 is: 15,266.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.78 : 27,620.43 = 11,063.30 : x
  2. Step 2: Convert to fraction form
    20,015.78/27,620.43 = 11,063.30/x
  3. Step 3: Cross multiply
    20,015.78x = 27,620.43 × 11,063.30
  4. Step 4: Simplify right side
    20,015.78x = 305,573,103.22
  5. Step 5: Solve for x
    x = 305,573,103.22/20,015.78
  6. Step 6: Final answer
    x = 15,266.61

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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.