Home / 20,135.80-27,791.03-11,636.75

Finding the Fourth Proportional to 20,135.80, 27,791.03 and 11,636.75

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Solution

The fourth proportional to 20,135.80, 27,791.03 and 11,636.75 is: 16,060.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.80 : 27,791.03 = 11,636.75 : x
  2. Step 2: Convert to fraction form
    20,135.80/27,791.03 = 11,636.75/x
  3. Step 3: Cross multiply
    20,135.80x = 27,791.03 × 11,636.75
  4. Step 4: Simplify right side
    20,135.80x = 323,397,210.17
  5. Step 5: Solve for x
    x = 323,397,210.17/20,135.80
  6. Step 6: Final answer
    x = 16,060.81

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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.