Home / 13,968.80-20,963.21-5,084.12

Finding the Fourth Proportional to 13,968.80, 20,963.21 and 5,084.12

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Solution

The fourth proportional to 13,968.80, 20,963.21 and 5,084.12 is: 7,629.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,968.80 : 20,963.21 = 5,084.12 : x
  2. Step 2: Convert to fraction form
    13,968.80/20,963.21 = 5,084.12/x
  3. Step 3: Cross multiply
    13,968.80x = 20,963.21 × 5,084.12
  4. Step 4: Simplify right side
    13,968.80x = 106,579,427.19
  5. Step 5: Solve for x
    x = 106,579,427.19/13,968.80
  6. Step 6: Final answer
    x = 7,629.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.