Home / 21,883.78-30,198.81-13,400.04

Finding the Fourth Proportional to 21,883.78, 30,198.81 and 13,400.04

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Solution

The fourth proportional to 21,883.78, 30,198.81 and 13,400.04 is: 18,491.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,883.78 : 30,198.81 = 13,400.04 : x
  2. Step 2: Convert to fraction form
    21,883.78/30,198.81 = 13,400.04/x
  3. Step 3: Cross multiply
    21,883.78x = 30,198.81 × 13,400.04
  4. Step 4: Simplify right side
    21,883.78x = 404,665,261.95
  5. Step 5: Solve for x
    x = 404,665,261.95/21,883.78
  6. Step 6: Final answer
    x = 18,491.56

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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.