Home / 20,120.24-27,765.52-11,167.21

Finding the Fourth Proportional to 20,120.24, 27,765.52 and 11,167.21

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Solution

The fourth proportional to 20,120.24, 27,765.52 and 11,167.21 is: 15,410.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.24 : 27,765.52 = 11,167.21 : x
  2. Step 2: Convert to fraction form
    20,120.24/27,765.52 = 11,167.21/x
  3. Step 3: Cross multiply
    20,120.24x = 27,765.52 × 11,167.21
  4. Step 4: Simplify right side
    20,120.24x = 310,063,336.76
  5. Step 5: Solve for x
    x = 310,063,336.76/20,120.24
  6. Step 6: Final answer
    x = 15,410.52

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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.