Home / 13,838.06-20,756.97-3,977.30

Finding the Fourth Proportional to 13,838.06, 20,756.97 and 3,977.30

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Solution

The fourth proportional to 13,838.06, 20,756.97 and 3,977.30 is: 5,965.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,838.06 : 20,756.97 = 3,977.30 : x
  2. Step 2: Convert to fraction form
    13,838.06/20,756.97 = 3,977.30/x
  3. Step 3: Cross multiply
    13,838.06x = 20,756.97 × 3,977.30
  4. Step 4: Simplify right side
    13,838.06x = 82,556,696.78
  5. Step 5: Solve for x
    x = 82,556,696.78/13,838.06
  6. Step 6: Final answer
    x = 5,965.92

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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.