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Finding the Fourth Proportional to 12,788.70, 19,182.78 and 4,997.49

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Solution

The fourth proportional to 12,788.70, 19,182.78 and 4,997.49 is: 7,496.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.70 : 19,182.78 = 4,997.49 : x
  2. Step 2: Convert to fraction form
    12,788.70/19,182.78 = 4,997.49/x
  3. Step 3: Cross multiply
    12,788.70x = 19,182.78 × 4,997.49
  4. Step 4: Simplify right side
    12,788.70x = 95,865,751.22
  5. Step 5: Solve for x
    x = 95,865,751.22/12,788.70
  6. Step 6: Final answer
    x = 7,496.13

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.