Home / 13,857.53-19,122.57-8,192.79

Finding the Fourth Proportional to 13,857.53, 19,122.57 and 8,192.79

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Solution

The fourth proportional to 13,857.53, 19,122.57 and 8,192.79 is: 11,305.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.53 : 19,122.57 = 8,192.79 : x
  2. Step 2: Convert to fraction form
    13,857.53/19,122.57 = 8,192.79/x
  3. Step 3: Cross multiply
    13,857.53x = 19,122.57 × 8,192.79
  4. Step 4: Simplify right side
    13,857.53x = 156,667,200.27
  5. Step 5: Solve for x
    x = 156,667,200.27/13,857.53
  6. Step 6: Final answer
    x = 11,305.57

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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.