Home / 13,906.90-19,189.33-7,857.01

Finding the Fourth Proportional to 13,906.90, 19,189.33 and 7,857.01

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Solution

The fourth proportional to 13,906.90, 19,189.33 and 7,857.01 is: 10,841.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906.90 : 19,189.33 = 7,857.01 : x
  2. Step 2: Convert to fraction form
    13,906.90/19,189.33 = 7,857.01/x
  3. Step 3: Cross multiply
    13,906.90x = 19,189.33 × 7,857.01
  4. Step 4: Simplify right side
    13,906.90x = 150,770,757.70
  5. Step 5: Solve for x
    x = 150,770,757.70/13,906.90
  6. Step 6: Final answer
    x = 10,841.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.