Home / 21,729.74-29,986.00-13,344.62

Finding the Fourth Proportional to 21,729.74, 29,986.00 and 13,344.62

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Solution

The fourth proportional to 21,729.74, 29,986.00 and 13,344.62 is: 18,414.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,729.74 : 29,986.00 = 13,344.62 : x
  2. Step 2: Convert to fraction form
    21,729.74/29,986.00 = 13,344.62/x
  3. Step 3: Cross multiply
    21,729.74x = 29,986.00 × 13,344.62
  4. Step 4: Simplify right side
    21,729.74x = 400,151,592.03
  5. Step 5: Solve for x
    x = 400,151,592.03/21,729.74
  6. Step 6: Final answer
    x = 18,414.93

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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.