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Finding the Fourth Proportional to 20,372.39, 30,567.38 and 11,019

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Solution

The fourth proportional to 20,372.39, 30,567.38 and 11,019 is: 16,533.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372.39 : 30,567.38 = 11,019 : x
  2. Step 2: Convert to fraction form
    20,372.39/30,567.38 = 11,019/x
  3. Step 3: Cross multiply
    20,372.39x = 30,567.38 × 11,019
  4. Step 4: Simplify right side
    20,372.39x = 336,821,905.13
  5. Step 5: Solve for x
    x = 336,821,905.13/20,372.39
  6. Step 6: Final answer
    x = 16,533.25

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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.