Home / 12,103.21-18,151.75-4,310.20

Finding the Fourth Proportional to 12,103.21, 18,151.75 and 4,310.20

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Solution

The fourth proportional to 12,103.21, 18,151.75 and 4,310.20 is: 6,464.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,103.21 : 18,151.75 = 4,310.20 : x
  2. Step 2: Convert to fraction form
    12,103.21/18,151.75 = 4,310.20/x
  3. Step 3: Cross multiply
    12,103.21x = 18,151.75 × 4,310.20
  4. Step 4: Simplify right side
    12,103.21x = 78,237,672.85
  5. Step 5: Solve for x
    x = 78,237,672.85/12,103.21
  6. Step 6: Final answer
    x = 6,464.21

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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.