Home / 20,791.75-28,693.22-11,360.92

Finding the Fourth Proportional to 20,791.75, 28,693.22 and 11,360.92

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Solution

The fourth proportional to 20,791.75, 28,693.22 and 11,360.92 is: 15,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.75 : 28,693.22 = 11,360.92 : x
  2. Step 2: Convert to fraction form
    20,791.75/28,693.22 = 11,360.92/x
  3. Step 3: Cross multiply
    20,791.75x = 28,693.22 × 11,360.92
  4. Step 4: Simplify right side
    20,791.75x = 325,981,376.96
  5. Step 5: Solve for x
    x = 325,981,376.96/20,791.75
  6. Step 6: Final answer
    x = 15,678.40

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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.