Home / 20,223.75-27,908.87-11,730.90

Finding the Fourth Proportional to 20,223.75, 27,908.87 and 11,730.90

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Solution

The fourth proportional to 20,223.75, 27,908.87 and 11,730.90 is: 16,188.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,223.75 : 27,908.87 = 11,730.90 : x
  2. Step 2: Convert to fraction form
    20,223.75/27,908.87 = 11,730.90/x
  3. Step 3: Cross multiply
    20,223.75x = 27,908.87 × 11,730.90
  4. Step 4: Simplify right side
    20,223.75x = 327,396,104.43
  5. Step 5: Solve for x
    x = 327,396,104.43/20,223.75
  6. Step 6: Final answer
    x = 16,188.69

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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.