Home / 12,205.40-18,310.26-4,812.80

Finding the Fourth Proportional to 12,205.40, 18,310.26 and 4,812.80

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Solution

The fourth proportional to 12,205.40, 18,310.26 and 4,812.80 is: 7,220.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,205.40 : 18,310.26 = 4,812.80 : x
  2. Step 2: Convert to fraction form
    12,205.40/18,310.26 = 4,812.80/x
  3. Step 3: Cross multiply
    12,205.40x = 18,310.26 × 4,812.80
  4. Step 4: Simplify right side
    12,205.40x = 88,123,619.33
  5. Step 5: Solve for x
    x = 88,123,619.33/12,205.40
  6. Step 6: Final answer
    x = 7,220.05

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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.