Home / 13,772.75-19,010.90-8,107.43

Finding the Fourth Proportional to 13,772.75, 19,010.90 and 8,107.43

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Solution

The fourth proportional to 13,772.75, 19,010.90 and 8,107.43 is: 11,190.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.75 : 19,010.90 = 8,107.43 : x
  2. Step 2: Convert to fraction form
    13,772.75/19,010.90 = 8,107.43/x
  3. Step 3: Cross multiply
    13,772.75x = 19,010.90 × 8,107.43
  4. Step 4: Simplify right side
    13,772.75x = 154,129,540.99
  5. Step 5: Solve for x
    x = 154,129,540.99/13,772.75
  6. Step 6: Final answer
    x = 11,190.91

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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.