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Finding the Fourth Proportional to 26,920, 37,163.07 and 20,856.72

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Solution

The fourth proportional to 26,920, 37,163.07 and 20,856.72 is: 28,792.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,920 : 37,163.07 = 20,856.72 : x
  2. Step 2: Convert to fraction form
    26,920/37,163.07 = 20,856.72/x
  3. Step 3: Cross multiply
    26,920x = 37,163.07 × 20,856.72
  4. Step 4: Simplify right side
    26,920x = 775,099,745.33
  5. Step 5: Solve for x
    x = 775,099,745.33/26,920
  6. Step 6: Final answer
    x = 28,792.71

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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.