Home / 13,794.35-20,685.31-3,931.38

Finding the Fourth Proportional to 13,794.35, 20,685.31 and 3,931.38

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Solution

The fourth proportional to 13,794.35, 20,685.31 and 3,931.38 is: 5,895.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,794.35 : 20,685.31 = 3,931.38 : x
  2. Step 2: Convert to fraction form
    13,794.35/20,685.31 = 3,931.38/x
  3. Step 3: Cross multiply
    13,794.35x = 20,685.31 × 3,931.38
  4. Step 4: Simplify right side
    13,794.35x = 81,321,804.20
  5. Step 5: Solve for x
    x = 81,321,804.20/13,794.35
  6. Step 6: Final answer
    x = 5,895.30

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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.