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Finding the Fourth Proportional to 19,713, 27,208.56 and 12,999.84

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Solution

The fourth proportional to 19,713, 27,208.56 and 12,999.84 is: 17,942.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,713 : 27,208.56 = 12,999.84 : x
  2. Step 2: Convert to fraction form
    19,713/27,208.56 = 12,999.84/x
  3. Step 3: Cross multiply
    19,713x = 27,208.56 × 12,999.84
  4. Step 4: Simplify right side
    19,713x = 353,706,926.63
  5. Step 5: Solve for x
    x = 353,706,926.63/19,713
  6. Step 6: Final answer
    x = 17,942.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.