Home / 13,402.75-20,105.22-4,168.75

Finding the Fourth Proportional to 13,402.75, 20,105.22 and 4,168.75

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Solution

The fourth proportional to 13,402.75, 20,105.22 and 4,168.75 is: 6,253.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402.75 : 20,105.22 = 4,168.75 : x
  2. Step 2: Convert to fraction form
    13,402.75/20,105.22 = 4,168.75/x
  3. Step 3: Cross multiply
    13,402.75x = 20,105.22 × 4,168.75
  4. Step 4: Simplify right side
    13,402.75x = 83,813,635.88
  5. Step 5: Solve for x
    x = 83,813,635.88/13,402.75
  6. Step 6: Final answer
    x = 6,253.47

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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.