Home / 12,137.06-18,205.58-3,817.80

Finding the Fourth Proportional to 12,137.06, 18,205.58 and 3,817.80

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Solution

The fourth proportional to 12,137.06, 18,205.58 and 3,817.80 is: 5,726.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.06 : 18,205.58 = 3,817.80 : x
  2. Step 2: Convert to fraction form
    12,137.06/18,205.58 = 3,817.80/x
  3. Step 3: Cross multiply
    12,137.06x = 18,205.58 × 3,817.80
  4. Step 4: Simplify right side
    12,137.06x = 69,505,263.32
  5. Step 5: Solve for x
    x = 69,505,263.32/12,137.06
  6. Step 6: Final answer
    x = 5,726.70

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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.