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Finding the Fourth Proportional to 30,892.49, 42,630.49 and 16,745.03

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Solution

The fourth proportional to 30,892.49, 42,630.49 and 16,745.03 is: 23,107.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,892.49 : 42,630.49 = 16,745.03 : x
  2. Step 2: Convert to fraction form
    30,892.49/42,630.49 = 16,745.03/x
  3. Step 3: Cross multiply
    30,892.49x = 42,630.49 × 16,745.03
  4. Step 4: Simplify right side
    30,892.49x = 713,848,537.09
  5. Step 5: Solve for x
    x = 713,848,537.09/30,892.49
  6. Step 6: Final answer
    x = 23,107.51

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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.