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Finding the Fourth Proportional to 28,243.54, 38,972.03 and 16,910.32

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Solution

The fourth proportional to 28,243.54, 38,972.03 and 16,910.32 is: 23,333.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.54 : 38,972.03 = 16,910.32 : x
  2. Step 2: Convert to fraction form
    28,243.54/38,972.03 = 16,910.32/x
  3. Step 3: Cross multiply
    28,243.54x = 38,972.03 × 16,910.32
  4. Step 4: Simplify right side
    28,243.54x = 659,029,218.94
  5. Step 5: Solve for x
    x = 659,029,218.94/28,243.54
  6. Step 6: Final answer
    x = 23,333.81

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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.