Home / 12,173.20-18,260.32-3,408.64

Finding the Fourth Proportional to 12,173.20, 18,260.32 and 3,408.64

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Solution

The fourth proportional to 12,173.20, 18,260.32 and 3,408.64 is: 5,113.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,173.20 : 18,260.32 = 3,408.64 : x
  2. Step 2: Convert to fraction form
    12,173.20/18,260.32 = 3,408.64/x
  3. Step 3: Cross multiply
    12,173.20x = 18,260.32 × 3,408.64
  4. Step 4: Simplify right side
    12,173.20x = 62,242,857.16
  5. Step 5: Solve for x
    x = 62,242,857.16/12,173.20
  6. Step 6: Final answer
    x = 5,113.11

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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.