Home / 18,960.30-28,408.92-11,542.32

Finding the Fourth Proportional to 18,960.30, 28,408.92 and 11,542.32

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Solution

The fourth proportional to 18,960.30, 28,408.92 and 11,542.32 is: 17,294.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.30 : 28,408.92 = 11,542.32 : x
  2. Step 2: Convert to fraction form
    18,960.30/28,408.92 = 11,542.32/x
  3. Step 3: Cross multiply
    18,960.30x = 28,408.92 × 11,542.32
  4. Step 4: Simplify right side
    18,960.30x = 327,904,845.49
  5. Step 5: Solve for x
    x = 327,904,845.49/18,960.30
  6. Step 6: Final answer
    x = 17,294.29

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1.5x scale

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.