Home / 26,919-37,161.69-20,855.72

Finding the Fourth Proportional to 26,919, 37,161.69 and 20,855.72

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Solution

The fourth proportional to 26,919, 37,161.69 and 20,855.72 is: 28,791.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,919 : 37,161.69 = 20,855.72 : x
  2. Step 2: Convert to fraction form
    26,919/37,161.69 = 20,855.72/x
  3. Step 3: Cross multiply
    26,919x = 37,161.69 × 20,855.72
  4. Step 4: Simplify right side
    26,919x = 775,033,801.37
  5. Step 5: Solve for x
    x = 775,033,801.37/26,919
  6. Step 6: Final answer
    x = 28,791.33

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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.