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Finding the Fourth Proportional to 16,755, 23,141.34 and 11,156.28

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Solution

The fourth proportional to 16,755, 23,141.34 and 11,156.28 is: 15,408.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,755 : 23,141.34 = 11,156.28 : x
  2. Step 2: Convert to fraction form
    16,755/23,141.34 = 11,156.28/x
  3. Step 3: Cross multiply
    16,755x = 23,141.34 × 11,156.28
  4. Step 4: Simplify right side
    16,755x = 258,171,268.62
  5. Step 5: Solve for x
    x = 258,171,268.62/16,755
  6. Step 6: Final answer
    x = 15,408.61

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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.