Home / 21,131.21-29,161.97-11,699.77

Finding the Fourth Proportional to 21,131.21, 29,161.97 and 11,699.77

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Solution

The fourth proportional to 21,131.21, 29,161.97 and 11,699.77 is: 16,146.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131.21 : 29,161.97 = 11,699.77 : x
  2. Step 2: Convert to fraction form
    21,131.21/29,161.97 = 11,699.77/x
  3. Step 3: Cross multiply
    21,131.21x = 29,161.97 × 11,699.77
  4. Step 4: Simplify right side
    21,131.21x = 341,188,298.09
  5. Step 5: Solve for x
    x = 341,188,298.09/21,131.21
  6. Step 6: Final answer
    x = 16,146.18

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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.