Home / 21,399.26-29,530.71-11,839.84

Finding the Fourth Proportional to 21,399.26, 29,530.71 and 11,839.84

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Solution

The fourth proportional to 21,399.26, 29,530.71 and 11,839.84 is: 16,338.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399.26 : 29,530.71 = 11,839.84 : x
  2. Step 2: Convert to fraction form
    21,399.26/29,530.71 = 11,839.84/x
  3. Step 3: Cross multiply
    21,399.26x = 29,530.71 × 11,839.84
  4. Step 4: Simplify right side
    21,399.26x = 349,638,807.66
  5. Step 5: Solve for x
    x = 349,638,807.66/21,399.26
  6. Step 6: Final answer
    x = 16,338.83

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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.