Home / 21,268.78-29,351.40-11,837.98

Finding the Fourth Proportional to 21,268.78, 29,351.40 and 11,837.98

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Solution

The fourth proportional to 21,268.78, 29,351.40 and 11,837.98 is: 16,336.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.78 : 29,351.40 = 11,837.98 : x
  2. Step 2: Convert to fraction form
    21,268.78/29,351.40 = 11,837.98/x
  3. Step 3: Cross multiply
    21,268.78x = 29,351.40 × 11,837.98
  4. Step 4: Simplify right side
    21,268.78x = 347,461,286.17
  5. Step 5: Solve for x
    x = 347,461,286.17/21,268.78
  6. Step 6: Final answer
    x = 16,336.68

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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.