Home / 13,758.36-18,991.05-8,092.86

Finding the Fourth Proportional to 13,758.36, 18,991.05 and 8,092.86

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Solution

The fourth proportional to 13,758.36, 18,991.05 and 8,092.86 is: 11,170.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.36 : 18,991.05 = 8,092.86 : x
  2. Step 2: Convert to fraction form
    13,758.36/18,991.05 = 8,092.86/x
  3. Step 3: Cross multiply
    13,758.36x = 18,991.05 × 8,092.86
  4. Step 4: Simplify right side
    13,758.36x = 153,691,908.90
  5. Step 5: Solve for x
    x = 153,691,908.90/13,758.36
  6. Step 6: Final answer
    x = 11,170.80

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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.