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Finding the Fourth Proportional to 18,879.78, 26,054.94 and 10,496.28

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Solution

The fourth proportional to 18,879.78, 26,054.94 and 10,496.28 is: 14,485.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.78 : 26,054.94 = 10,496.28 : x
  2. Step 2: Convert to fraction form
    18,879.78/26,054.94 = 10,496.28/x
  3. Step 3: Cross multiply
    18,879.78x = 26,054.94 × 10,496.28
  4. Step 4: Simplify right side
    18,879.78x = 273,479,945.62
  5. Step 5: Solve for x
    x = 273,479,945.62/18,879.78
  6. Step 6: Final answer
    x = 14,485.34

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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.