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Finding the Fourth Proportional to 17,580.63, 26,379.05 and 8,821.83

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Solution

The fourth proportional to 17,580.63, 26,379.05 and 8,821.83 is: 13,236.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,580.63 : 26,379.05 = 8,821.83 : x
  2. Step 2: Convert to fraction form
    17,580.63/26,379.05 = 8,821.83/x
  3. Step 3: Cross multiply
    17,580.63x = 26,379.05 × 8,821.83
  4. Step 4: Simplify right side
    17,580.63x = 232,711,450.55
  5. Step 5: Solve for x
    x = 232,711,450.55/17,580.63
  6. Step 6: Final answer
    x = 13,236.81

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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.