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Finding the Fourth Proportional to 19,688.61, 27,170.21 and 10,736.09

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Solution

The fourth proportional to 19,688.61, 27,170.21 and 10,736.09 is: 14,815.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,688.61 : 27,170.21 = 10,736.09 : x
  2. Step 2: Convert to fraction form
    19,688.61/27,170.21 = 10,736.09/x
  3. Step 3: Cross multiply
    19,688.61x = 27,170.21 × 10,736.09
  4. Step 4: Simplify right side
    19,688.61x = 291,701,819.88
  5. Step 5: Solve for x
    x = 291,701,819.88/19,688.61
  6. Step 6: Final answer
    x = 14,815.77

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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.