Home / 30,728.21-42,408.97-17,302.09

Finding the Fourth Proportional to 30,728.21, 42,408.97 and 17,302.09

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Solution

The fourth proportional to 30,728.21, 42,408.97 and 17,302.09 is: 23,879.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,728.21 : 42,408.97 = 17,302.09 : x
  2. Step 2: Convert to fraction form
    30,728.21/42,408.97 = 17,302.09/x
  3. Step 3: Cross multiply
    30,728.21x = 42,408.97 × 17,302.09
  4. Step 4: Simplify right side
    30,728.21x = 733,763,815.75
  5. Step 5: Solve for x
    x = 733,763,815.75/30,728.21
  6. Step 6: Final answer
    x = 23,879.16

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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.