Home / 13,858.56-19,126.80-8,198.28

Finding the Fourth Proportional to 13,858.56, 19,126.80 and 8,198.28

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Solution

The fourth proportional to 13,858.56, 19,126.80 and 8,198.28 is: 11,314.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.56 : 19,126.80 = 8,198.28 : x
  2. Step 2: Convert to fraction form
    13,858.56/19,126.80 = 8,198.28/x
  3. Step 3: Cross multiply
    13,858.56x = 19,126.80 × 8,198.28
  4. Step 4: Simplify right side
    13,858.56x = 156,806,861.90
  5. Step 5: Solve for x
    x = 156,806,861.90/13,858.56
  6. Step 6: Final answer
    x = 11,314.80

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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.