Home / 13,106.75-19,640.96-8,161.34

Finding the Fourth Proportional to 13,106.75, 19,640.96 and 8,161.34

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Solution

The fourth proportional to 13,106.75, 19,640.96 and 8,161.34 is: 12,230.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,106.75 : 19,640.96 = 8,161.34 : x
  2. Step 2: Convert to fraction form
    13,106.75/19,640.96 = 8,161.34/x
  3. Step 3: Cross multiply
    13,106.75x = 19,640.96 × 8,161.34
  4. Step 4: Simplify right side
    13,106.75x = 160,296,511.68
  5. Step 5: Solve for x
    x = 160,296,511.68/13,106.75
  6. Step 6: Final answer
    x = 12,230.07

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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.