Home / 12,311.85-18,469.59-6,468.90

Finding the Fourth Proportional to 12,311.85, 18,469.59 and 6,468.90

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Solution

The fourth proportional to 12,311.85, 18,469.59 and 6,468.90 is: 9,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.85 : 18,469.59 = 6,468.90 : x
  2. Step 2: Convert to fraction form
    12,311.85/18,469.59 = 6,468.90/x
  3. Step 3: Cross multiply
    12,311.85x = 18,469.59 × 6,468.90
  4. Step 4: Simplify right side
    12,311.85x = 119,477,930.75
  5. Step 5: Solve for x
    x = 119,477,930.75/12,311.85
  6. Step 6: Final answer
    x = 9,704.30

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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.