Home / 12,910.80-19,366.20-4,146.60

Finding the Fourth Proportional to 12,910.80, 19,366.20 and 4,146.60

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Solution

The fourth proportional to 12,910.80, 19,366.20 and 4,146.60 is: 6,219.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910.80 : 19,366.20 = 4,146.60 : x
  2. Step 2: Convert to fraction form
    12,910.80/19,366.20 = 4,146.60/x
  3. Step 3: Cross multiply
    12,910.80x = 19,366.20 × 4,146.60
  4. Step 4: Simplify right side
    12,910.80x = 80,303,884.92
  5. Step 5: Solve for x
    x = 80,303,884.92/12,910.80
  6. Step 6: Final answer
    x = 6,219.90

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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.