Home / 13,966.20-20,906.10-8,105.40

Finding the Fourth Proportional to 13,966.20, 20,906.10 and 8,105.40

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Solution

The fourth proportional to 13,966.20, 20,906.10 and 8,105.40 is: 12,133.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,966.20 : 20,906.10 = 8,105.40 : x
  2. Step 2: Convert to fraction form
    13,966.20/20,906.10 = 8,105.40/x
  3. Step 3: Cross multiply
    13,966.20x = 20,906.10 × 8,105.40
  4. Step 4: Simplify right side
    13,966.20x = 169,452,302.94
  5. Step 5: Solve for x
    x = 169,452,302.94/13,966.20
  6. Step 6: Final answer
    x = 12,133.03

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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.