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Finding the Fourth Proportional to 11,305.44, 16,891.29 and 10,917.90

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Solution

The fourth proportional to 11,305.44, 16,891.29 and 10,917.90 is: 16,312.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,305.44 : 16,891.29 = 10,917.90 : x
  2. Step 2: Convert to fraction form
    11,305.44/16,891.29 = 10,917.90/x
  3. Step 3: Cross multiply
    11,305.44x = 16,891.29 × 10,917.90
  4. Step 4: Simplify right side
    11,305.44x = 184,417,415.09
  5. Step 5: Solve for x
    x = 184,417,415.09/11,305.44
  6. Step 6: Final answer
    x = 16,312.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.