Home / 21,101.97-29,120.36-11,670.53

Finding the Fourth Proportional to 21,101.97, 29,120.36 and 11,670.53

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Solution

The fourth proportional to 21,101.97, 29,120.36 and 11,670.53 is: 16,105.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.97 : 29,120.36 = 11,670.53 : x
  2. Step 2: Convert to fraction form
    21,101.97/29,120.36 = 11,670.53/x
  3. Step 3: Cross multiply
    21,101.97x = 29,120.36 × 11,670.53
  4. Step 4: Simplify right side
    21,101.97x = 339,850,136.97
  5. Step 5: Solve for x
    x = 339,850,136.97/21,101.97
  6. Step 6: Final answer
    x = 16,105.14

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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.