Home / 20,791.44-31,184.42-7,642.10

Finding the Fourth Proportional to 20,791.44, 31,184.42 and 7,642.10

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Solution

The fourth proportional to 20,791.44, 31,184.42 and 7,642.10 is: 11,462.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.44 : 31,184.42 = 7,642.10 : x
  2. Step 2: Convert to fraction form
    20,791.44/31,184.42 = 7,642.10/x
  3. Step 3: Cross multiply
    20,791.44x = 31,184.42 × 7,642.10
  4. Step 4: Simplify right side
    20,791.44x = 238,314,261.95
  5. Step 5: Solve for x
    x = 238,314,261.95/20,791.44
  6. Step 6: Final answer
    x = 11,462.13

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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.