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Finding the Fourth Proportional to 20,308.03, 30,451.03 and 9,208.64

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Solution

The fourth proportional to 20,308.03, 30,451.03 and 9,208.64 is: 13,807.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.03 : 30,451.03 = 9,208.64 : x
  2. Step 2: Convert to fraction form
    20,308.03/30,451.03 = 9,208.64/x
  3. Step 3: Cross multiply
    20,308.03x = 30,451.03 × 9,208.64
  4. Step 4: Simplify right side
    20,308.03x = 280,412,626.01
  5. Step 5: Solve for x
    x = 280,412,626.01/20,308.03
  6. Step 6: Final answer
    x = 13,807.97

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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.