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Finding the Fourth Proportional to 30,630.50, 42,269.94 and 17,202.94

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Solution

The fourth proportional to 30,630.50, 42,269.94 and 17,202.94 is: 23,739.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,630.50 : 42,269.94 = 17,202.94 : x
  2. Step 2: Convert to fraction form
    30,630.50/42,269.94 = 17,202.94/x
  3. Step 3: Cross multiply
    30,630.50x = 42,269.94 × 17,202.94
  4. Step 4: Simplify right side
    30,630.50x = 727,167,241.62
  5. Step 5: Solve for x
    x = 727,167,241.62/30,630.50
  6. Step 6: Final answer
    x = 23,739.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.