Home / 21,403.31-29,537.43-11,843.03

Finding the Fourth Proportional to 21,403.31, 29,537.43 and 11,843.03

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Solution

The fourth proportional to 21,403.31, 29,537.43 and 11,843.03 is: 16,343.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,403.31 : 29,537.43 = 11,843.03 : x
  2. Step 2: Convert to fraction form
    21,403.31/29,537.43 = 11,843.03/x
  3. Step 3: Cross multiply
    21,403.31x = 29,537.43 × 11,843.03
  4. Step 4: Simplify right side
    21,403.31x = 349,812,521.93
  5. Step 5: Solve for x
    x = 349,812,521.93/21,403.31
  6. Step 6: Final answer
    x = 16,343.86

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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.