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Finding the Fourth Proportional to 12,805.25, 17,676.11 and 8,615.93

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Solution

The fourth proportional to 12,805.25, 17,676.11 and 8,615.93 is: 11,893.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805.25 : 17,676.11 = 8,615.93 : x
  2. Step 2: Convert to fraction form
    12,805.25/17,676.11 = 8,615.93/x
  3. Step 3: Cross multiply
    12,805.25x = 17,676.11 × 8,615.93
  4. Step 4: Simplify right side
    12,805.25x = 152,296,126.43
  5. Step 5: Solve for x
    x = 152,296,126.43/12,805.25
  6. Step 6: Final answer
    x = 11,893.26

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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.