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Finding the Fourth Proportional to 28,168.83, 38,879.93 and 16,845.03

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Solution

The fourth proportional to 28,168.83, 38,879.93 and 16,845.03 is: 23,250.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.83 : 38,879.93 = 16,845.03 : x
  2. Step 2: Convert to fraction form
    28,168.83/38,879.93 = 16,845.03/x
  3. Step 3: Cross multiply
    28,168.83x = 38,879.93 × 16,845.03
  4. Step 4: Simplify right side
    28,168.83x = 654,933,629.36
  5. Step 5: Solve for x
    x = 654,933,629.36/28,168.83
  6. Step 6: Final answer
    x = 23,250.30

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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.