Home / 13,791.26-20,683.35-6,388.47

Finding the Fourth Proportional to 13,791.26, 20,683.35 and 6,388.47

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Solution

The fourth proportional to 13,791.26, 20,683.35 and 6,388.47 is: 9,581.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.26 : 20,683.35 = 6,388.47 : x
  2. Step 2: Convert to fraction form
    13,791.26/20,683.35 = 6,388.47/x
  3. Step 3: Cross multiply
    13,791.26x = 20,683.35 × 6,388.47
  4. Step 4: Simplify right side
    13,791.26x = 132,134,960.97
  5. Step 5: Solve for x
    x = 132,134,960.97/13,791.26
  6. Step 6: Final answer
    x = 9,581.06

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1.5x scale

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.