Home / 13,839.36-20,748.98-5,516.88

Finding the Fourth Proportional to 13,839.36, 20,748.98 and 5,516.88

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Solution

The fourth proportional to 13,839.36, 20,748.98 and 5,516.88 is: 8,271.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.36 : 20,748.98 = 5,516.88 : x
  2. Step 2: Convert to fraction form
    13,839.36/20,748.98 = 5,516.88/x
  3. Step 3: Cross multiply
    13,839.36x = 20,748.98 × 5,516.88
  4. Step 4: Simplify right side
    13,839.36x = 114,469,632.78
  5. Step 5: Solve for x
    x = 114,469,632.78/13,839.36
  6. Step 6: Final answer
    x = 8,271.31

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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.