Home / 13,968.76-20,939.94-5,197.72

Finding the Fourth Proportional to 13,968.76, 20,939.94 and 5,197.72

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Solution

The fourth proportional to 13,968.76, 20,939.94 and 5,197.72 is: 7,791.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,968.76 : 20,939.94 = 5,197.72 : x
  2. Step 2: Convert to fraction form
    13,968.76/20,939.94 = 5,197.72/x
  3. Step 3: Cross multiply
    13,968.76x = 20,939.94 × 5,197.72
  4. Step 4: Simplify right side
    13,968.76x = 108,839,944.94
  5. Step 5: Solve for x
    x = 108,839,944.94/13,968.76
  6. Step 6: Final answer
    x = 7,791.67

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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.