Home / 12,213.20-18,308.70-4,416.50

Finding the Fourth Proportional to 12,213.20, 18,308.70 and 4,416.50

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Solution

The fourth proportional to 12,213.20, 18,308.70 and 4,416.50 is: 6,620.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.20 : 18,308.70 = 4,416.50 : x
  2. Step 2: Convert to fraction form
    12,213.20/18,308.70 = 4,416.50/x
  3. Step 3: Cross multiply
    12,213.20x = 18,308.70 × 4,416.50
  4. Step 4: Simplify right side
    12,213.20x = 80,860,373.55
  5. Step 5: Solve for x
    x = 80,860,373.55/12,213.20
  6. Step 6: Final answer
    x = 6,620.74

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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.