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Finding the Fourth Proportional to 17,911.70, 26,870.79 and 5,904.49

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Solution

The fourth proportional to 17,911.70, 26,870.79 and 5,904.49 is: 8,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,911.70 : 26,870.79 = 5,904.49 : x
  2. Step 2: Convert to fraction form
    17,911.70/26,870.79 = 5,904.49/x
  3. Step 3: Cross multiply
    17,911.70x = 26,870.79 × 5,904.49
  4. Step 4: Simplify right side
    17,911.70x = 158,658,310.85
  5. Step 5: Solve for x
    x = 158,658,310.85/17,911.70
  6. Step 6: Final answer
    x = 8,857.80

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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.