Home / 20,791.17-31,186.22-7,637.85

Finding the Fourth Proportional to 20,791.17, 31,186.22 and 7,637.85

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Solution

The fourth proportional to 20,791.17, 31,186.22 and 7,637.85 is: 11,456.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.17 : 31,186.22 = 7,637.85 : x
  2. Step 2: Convert to fraction form
    20,791.17/31,186.22 = 7,637.85/x
  3. Step 3: Cross multiply
    20,791.17x = 31,186.22 × 7,637.85
  4. Step 4: Simplify right side
    20,791.17x = 238,195,632.24
  5. Step 5: Solve for x
    x = 238,195,632.24/20,791.17
  6. Step 6: Final answer
    x = 11,456.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.