Home / 20,120.13-27,764.48-11,167.64

Finding the Fourth Proportional to 20,120.13, 27,764.48 and 11,167.64

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Solution

The fourth proportional to 20,120.13, 27,764.48 and 11,167.64 is: 15,410.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.13 : 27,764.48 = 11,167.64 : x
  2. Step 2: Convert to fraction form
    20,120.13/27,764.48 = 11,167.64/x
  3. Step 3: Cross multiply
    20,120.13x = 27,764.48 × 11,167.64
  4. Step 4: Simplify right side
    20,120.13x = 310,063,717.43
  5. Step 5: Solve for x
    x = 310,063,717.43/20,120.13
  6. Step 6: Final answer
    x = 15,410.62

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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.