Home / 12,939.04-19,408.72-3,705.04

Finding the Fourth Proportional to 12,939.04, 19,408.72 and 3,705.04

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Solution

The fourth proportional to 12,939.04, 19,408.72 and 3,705.04 is: 5,557.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.04 : 19,408.72 = 3,705.04 : x
  2. Step 2: Convert to fraction form
    12,939.04/19,408.72 = 3,705.04/x
  3. Step 3: Cross multiply
    12,939.04x = 19,408.72 × 3,705.04
  4. Step 4: Simplify right side
    12,939.04x = 71,910,083.95
  5. Step 5: Solve for x
    x = 71,910,083.95/12,939.04
  6. Step 6: Final answer
    x = 5,557.61

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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.