Home / 13,540.91-20,314.60-6,860.75

Finding the Fourth Proportional to 13,540.91, 20,314.60 and 6,860.75

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Solution

The fourth proportional to 13,540.91, 20,314.60 and 6,860.75 is: 10,292.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.91 : 20,314.60 = 6,860.75 : x
  2. Step 2: Convert to fraction form
    13,540.91/20,314.60 = 6,860.75/x
  3. Step 3: Cross multiply
    13,540.91x = 20,314.60 × 6,860.75
  4. Step 4: Simplify right side
    13,540.91x = 139,373,290.38
  5. Step 5: Solve for x
    x = 139,373,290.38/13,540.91
  6. Step 6: Final answer
    x = 10,292.76

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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.