Home / 20,791.24-28,693.86-11,361.20

Finding the Fourth Proportional to 20,791.24, 28,693.86 and 11,361.20

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Solution

The fourth proportional to 20,791.24, 28,693.86 and 11,361.20 is: 15,679.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.24 : 28,693.86 = 11,361.20 : x
  2. Step 2: Convert to fraction form
    20,791.24/28,693.86 = 11,361.20/x
  3. Step 3: Cross multiply
    20,791.24x = 28,693.86 × 11,361.20
  4. Step 4: Simplify right side
    20,791.24x = 325,996,682.23
  5. Step 5: Solve for x
    x = 325,996,682.23/20,791.24
  6. Step 6: Final answer
    x = 15,679.52

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.