Home / 13,971.39-20,928.97-6,464.38

Finding the Fourth Proportional to 13,971.39, 20,928.97 and 6,464.38

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Solution

The fourth proportional to 13,971.39, 20,928.97 and 6,464.38 is: 9,683.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,971.39 : 20,928.97 = 6,464.38 : x
  2. Step 2: Convert to fraction form
    13,971.39/20,928.97 = 6,464.38/x
  3. Step 3: Cross multiply
    13,971.39x = 20,928.97 × 6,464.38
  4. Step 4: Simplify right side
    13,971.39x = 135,292,770.85
  5. Step 5: Solve for x
    x = 135,292,770.85/13,971.39
  6. Step 6: Final answer
    x = 9,683.56

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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.