Home / 12,015.40-18,025.80-3,695.80

Finding the Fourth Proportional to 12,015.40, 18,025.80 and 3,695.80

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Solution

The fourth proportional to 12,015.40, 18,025.80 and 3,695.80 is: 5,544.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.40 : 18,025.80 = 3,695.80 : x
  2. Step 2: Convert to fraction form
    12,015.40/18,025.80 = 3,695.80/x
  3. Step 3: Cross multiply
    12,015.40x = 18,025.80 × 3,695.80
  4. Step 4: Simplify right side
    12,015.40x = 66,619,751.64
  5. Step 5: Solve for x
    x = 66,619,751.64/12,015.40
  6. Step 6: Final answer
    x = 5,544.53

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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.