Home / 12,188.40-18,280.08-4,183.44

Finding the Fourth Proportional to 12,188.40, 18,280.08 and 4,183.44

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Solution

The fourth proportional to 12,188.40, 18,280.08 and 4,183.44 is: 6,274.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.40 : 18,280.08 = 4,183.44 : x
  2. Step 2: Convert to fraction form
    12,188.40/18,280.08 = 4,183.44/x
  3. Step 3: Cross multiply
    12,188.40x = 18,280.08 × 4,183.44
  4. Step 4: Simplify right side
    12,188.40x = 76,473,617.88
  5. Step 5: Solve for x
    x = 76,473,617.88/12,188.40
  6. Step 6: Final answer
    x = 6,274.30

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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.