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Finding the Fourth Proportional to 17,885.22, 26,828.03 and 5,405.35

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Solution

The fourth proportional to 17,885.22, 26,828.03 and 5,405.35 is: 8,108.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,885.22 : 26,828.03 = 5,405.35 : x
  2. Step 2: Convert to fraction form
    17,885.22/26,828.03 = 5,405.35/x
  3. Step 3: Cross multiply
    17,885.22x = 26,828.03 × 5,405.35
  4. Step 4: Simplify right side
    17,885.22x = 145,014,891.96
  5. Step 5: Solve for x
    x = 145,014,891.96/17,885.22
  6. Step 6: Final answer
    x = 8,108.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.