Home / 13,800.22-20,697.21-3,939.28

Finding the Fourth Proportional to 13,800.22, 20,697.21 and 3,939.28

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Solution

The fourth proportional to 13,800.22, 20,697.21 and 3,939.28 is: 5,908.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,800.22 : 20,697.21 = 3,939.28 : x
  2. Step 2: Convert to fraction form
    13,800.22/20,697.21 = 3,939.28/x
  3. Step 3: Cross multiply
    13,800.22x = 20,697.21 × 3,939.28
  4. Step 4: Simplify right side
    13,800.22x = 81,532,105.41
  5. Step 5: Solve for x
    x = 81,532,105.41/13,800.22
  6. Step 6: Final answer
    x = 5,908.03

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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.