Home / 13,823.45-20,728.94-3,960.47

Finding the Fourth Proportional to 13,823.45, 20,728.94 and 3,960.47

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Solution

The fourth proportional to 13,823.45, 20,728.94 and 3,960.47 is: 5,938.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,823.45 : 20,728.94 = 3,960.47 : x
  2. Step 2: Convert to fraction form
    13,823.45/20,728.94 = 3,960.47/x
  3. Step 3: Cross multiply
    13,823.45x = 20,728.94 × 3,960.47
  4. Step 4: Simplify right side
    13,823.45x = 82,096,325.20
  5. Step 5: Solve for x
    x = 82,096,325.20/13,823.45
  6. Step 6: Final answer
    x = 5,938.92

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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.