Home / 13,889.41-19,183.74-9,405.36

Finding the Fourth Proportional to 13,889.41, 19,183.74 and 9,405.36

Calculator

Solution

The fourth proportional to 13,889.41, 19,183.74 and 9,405.36 is: 12,990.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.41 : 19,183.74 = 9,405.36 : x
  2. Step 2: Convert to fraction form
    13,889.41/19,183.74 = 9,405.36/x
  3. Step 3: Cross multiply
    13,889.41x = 19,183.74 × 9,405.36
  4. Step 4: Simplify right side
    13,889.41x = 180,429,980.85
  5. Step 5: Solve for x
    x = 180,429,980.85/13,889.41
  6. Step 6: Final answer
    x = 12,990.47

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.