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Finding the Fourth Proportional to 12,806.34, 17,676.12 and 8,342.34

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Solution

The fourth proportional to 12,806.34, 17,676.12 and 8,342.34 is: 11,514.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,806.34 : 17,676.12 = 8,342.34 : x
  2. Step 2: Convert to fraction form
    12,806.34/17,676.12 = 8,342.34/x
  3. Step 3: Cross multiply
    12,806.34x = 17,676.12 × 8,342.34
  4. Step 4: Simplify right side
    12,806.34x = 147,460,202.92
  5. Step 5: Solve for x
    x = 147,460,202.92/12,806.34
  6. Step 6: Final answer
    x = 11,514.63

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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.