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Finding the Fourth Proportional to 19,926.91, 29,883.03 and 8,680.87

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Solution

The fourth proportional to 19,926.91, 29,883.03 and 8,680.87 is: 13,018.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,926.91 : 29,883.03 = 8,680.87 : x
  2. Step 2: Convert to fraction form
    19,926.91/29,883.03 = 8,680.87/x
  3. Step 3: Cross multiply
    19,926.91x = 29,883.03 × 8,680.87
  4. Step 4: Simplify right side
    19,926.91x = 259,410,698.64
  5. Step 5: Solve for x
    x = 259,410,698.64/19,926.91
  6. Step 6: Final answer
    x = 13,018.11

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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.