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Finding the Fourth Proportional to 19,192.21, 28,786.03 and 6,711.28

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Solution

The fourth proportional to 19,192.21, 28,786.03 and 6,711.28 is: 10,066.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,192.21 : 28,786.03 = 6,711.28 : x
  2. Step 2: Convert to fraction form
    19,192.21/28,786.03 = 6,711.28/x
  3. Step 3: Cross multiply
    19,192.21x = 28,786.03 × 6,711.28
  4. Step 4: Simplify right side
    19,192.21x = 193,191,107.42
  5. Step 5: Solve for x
    x = 193,191,107.42/19,192.21
  6. Step 6: Final answer
    x = 10,066.12

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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.