Home / 13,937.96-20,906.85-3,408.02

Finding the Fourth Proportional to 13,937.96, 20,906.85 and 3,408.02

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Solution

The fourth proportional to 13,937.96, 20,906.85 and 3,408.02 is: 5,112.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,937.96 : 20,906.85 = 3,408.02 : x
  2. Step 2: Convert to fraction form
    13,937.96/20,906.85 = 3,408.02/x
  3. Step 3: Cross multiply
    13,937.96x = 20,906.85 × 3,408.02
  4. Step 4: Simplify right side
    13,937.96x = 71,250,962.94
  5. Step 5: Solve for x
    x = 71,250,962.94/13,937.96
  6. Step 6: Final answer
    x = 5,112.01

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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.