Home / 20,120.44-27,766.14-11,167.72

Finding the Fourth Proportional to 20,120.44, 27,766.14 and 11,167.72

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Solution

The fourth proportional to 20,120.44, 27,766.14 and 11,167.72 is: 15,411.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.44 : 27,766.14 = 11,167.72 : x
  2. Step 2: Convert to fraction form
    20,120.44/27,766.14 = 11,167.72/x
  3. Step 3: Cross multiply
    20,120.44x = 27,766.14 × 11,167.72
  4. Step 4: Simplify right side
    20,120.44x = 310,084,477.00
  5. Step 5: Solve for x
    x = 310,084,477.00/20,120.44
  6. Step 6: Final answer
    x = 15,411.42

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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.