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Finding the Fourth Proportional to 12,608.63, 17,394.06 and 8,133.82

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Solution

The fourth proportional to 12,608.63, 17,394.06 and 8,133.82 is: 11,220.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,608.63 : 17,394.06 = 8,133.82 : x
  2. Step 2: Convert to fraction form
    12,608.63/17,394.06 = 8,133.82/x
  3. Step 3: Cross multiply
    12,608.63x = 17,394.06 × 8,133.82
  4. Step 4: Simplify right side
    12,608.63x = 141,480,109.62
  5. Step 5: Solve for x
    x = 141,480,109.62/12,608.63
  6. Step 6: Final answer
    x = 11,220.90

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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.