Home / 13,858.21-19,120.17-8,193.43

Finding the Fourth Proportional to 13,858.21, 19,120.17 and 8,193.43

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Solution

The fourth proportional to 13,858.21, 19,120.17 and 8,193.43 is: 11,304.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.21 : 19,120.17 = 8,193.43 : x
  2. Step 2: Convert to fraction form
    13,858.21/19,120.17 = 8,193.43/x
  3. Step 3: Cross multiply
    13,858.21x = 19,120.17 × 8,193.43
  4. Step 4: Simplify right side
    13,858.21x = 156,659,774.48
  5. Step 5: Solve for x
    x = 156,659,774.48/13,858.21
  6. Step 6: Final answer
    x = 11,304.47

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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.