Home / 21,102.11-29,120.42-11,670.47

Finding the Fourth Proportional to 21,102.11, 29,120.42 and 11,670.47

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Solution

The fourth proportional to 21,102.11, 29,120.42 and 11,670.47 is: 16,104.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.11 : 29,120.42 = 11,670.47 : x
  2. Step 2: Convert to fraction form
    21,102.11/29,120.42 = 11,670.47/x
  3. Step 3: Cross multiply
    21,102.11x = 29,120.42 × 11,670.47
  4. Step 4: Simplify right side
    21,102.11x = 339,848,929.65
  5. Step 5: Solve for x
    x = 339,848,929.65/21,102.11
  6. Step 6: Final answer
    x = 16,104.97

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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.