Home / 18,879.08-26,043.32-11,321.78

Finding the Fourth Proportional to 18,879.08, 26,043.32 and 11,321.78

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Solution

The fourth proportional to 18,879.08, 26,043.32 and 11,321.78 is: 15,618.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.08 : 26,043.32 = 11,321.78 : x
  2. Step 2: Convert to fraction form
    18,879.08/26,043.32 = 11,321.78/x
  3. Step 3: Cross multiply
    18,879.08x = 26,043.32 × 11,321.78
  4. Step 4: Simplify right side
    18,879.08x = 294,856,682.90
  5. Step 5: Solve for x
    x = 294,856,682.90/18,879.08
  6. Step 6: Final answer
    x = 15,618.17

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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.