Home / 13,144.93-18,121.17-8,105.77

Finding the Fourth Proportional to 13,144.93, 18,121.17 and 8,105.77

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Solution

The fourth proportional to 13,144.93, 18,121.17 and 8,105.77 is: 11,174.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.93 : 18,121.17 = 8,105.77 : x
  2. Step 2: Convert to fraction form
    13,144.93/18,121.17 = 8,105.77/x
  3. Step 3: Cross multiply
    13,144.93x = 18,121.17 × 8,105.77
  4. Step 4: Simplify right side
    13,144.93x = 146,886,043.60
  5. Step 5: Solve for x
    x = 146,886,043.60/13,144.93
  6. Step 6: Final answer
    x = 11,174.35

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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.