Home / 13,319.49-19,982.53-3,959.47

Finding the Fourth Proportional to 13,319.49, 19,982.53 and 3,959.47

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Solution

The fourth proportional to 13,319.49, 19,982.53 and 3,959.47 is: 5,940.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.49 : 19,982.53 = 3,959.47 : x
  2. Step 2: Convert to fraction form
    13,319.49/19,982.53 = 3,959.47/x
  3. Step 3: Cross multiply
    13,319.49x = 19,982.53 × 3,959.47
  4. Step 4: Simplify right side
    13,319.49x = 79,120,272.09
  5. Step 5: Solve for x
    x = 79,120,272.09/13,319.49
  6. Step 6: Final answer
    x = 5,940.19

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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.