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Finding the Fourth Proportional to 12,763.03, 19,144.54 and 3,998.63

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Solution

The fourth proportional to 12,763.03, 19,144.54 and 3,998.63 is: 5,997.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,763.03 : 19,144.54 = 3,998.63 : x
  2. Step 2: Convert to fraction form
    12,763.03/19,144.54 = 3,998.63/x
  3. Step 3: Cross multiply
    12,763.03x = 19,144.54 × 3,998.63
  4. Step 4: Simplify right side
    12,763.03x = 76,551,836.26
  5. Step 5: Solve for x
    x = 76,551,836.26/12,763.03
  6. Step 6: Final answer
    x = 5,997.94

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Double scale
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Similar ratio
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1.5x scale

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.