Home / 21,268.80-29,351.76-11,837.28

Finding the Fourth Proportional to 21,268.80, 29,351.76 and 11,837.28

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Solution

The fourth proportional to 21,268.80, 29,351.76 and 11,837.28 is: 16,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.80 : 29,351.76 = 11,837.28 : x
  2. Step 2: Convert to fraction form
    21,268.80/29,351.76 = 11,837.28/x
  3. Step 3: Cross multiply
    21,268.80x = 29,351.76 × 11,837.28
  4. Step 4: Simplify right side
    21,268.80x = 347,445,001.61
  5. Step 5: Solve for x
    x = 347,445,001.61/21,268.80
  6. Step 6: Final answer
    x = 16,335.90

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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.