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Finding the Fourth Proportional to 12,398.85, 17,110.49 and 7,093.89

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Solution

The fourth proportional to 12,398.85, 17,110.49 and 7,093.89 is: 9,789.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.85 : 17,110.49 = 7,093.89 : x
  2. Step 2: Convert to fraction form
    12,398.85/17,110.49 = 7,093.89/x
  3. Step 3: Cross multiply
    12,398.85x = 17,110.49 × 7,093.89
  4. Step 4: Simplify right side
    12,398.85x = 121,379,898.44
  5. Step 5: Solve for x
    x = 121,379,898.44/12,398.85
  6. Step 6: Final answer
    x = 9,789.61

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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.