Home / 13,131.25-19,696.88-3,897.25

Finding the Fourth Proportional to 13,131.25, 19,696.88 and 3,897.25

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Solution

The fourth proportional to 13,131.25, 19,696.88 and 3,897.25 is: 5,845.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.25 : 19,696.88 = 3,897.25 : x
  2. Step 2: Convert to fraction form
    13,131.25/19,696.88 = 3,897.25/x
  3. Step 3: Cross multiply
    13,131.25x = 19,696.88 × 3,897.25
  4. Step 4: Simplify right side
    13,131.25x = 76,763,665.58
  5. Step 5: Solve for x
    x = 76,763,665.58/13,131.25
  6. Step 6: Final answer
    x = 5,845.88

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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.