Home / 21,262.81-31,902.42-8,112.10

Finding the Fourth Proportional to 21,262.81, 31,902.42 and 8,112.10

Calculator

Solution

The fourth proportional to 21,262.81, 31,902.42 and 8,112.10 is: 12,171.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262.81 : 31,902.42 = 8,112.10 : x
  2. Step 2: Convert to fraction form
    21,262.81/31,902.42 = 8,112.10/x
  3. Step 3: Cross multiply
    21,262.81x = 31,902.42 × 8,112.10
  4. Step 4: Simplify right side
    21,262.81x = 258,795,621.28
  5. Step 5: Solve for x
    x = 258,795,621.28/21,262.81
  6. Step 6: Final answer
    x = 12,171.28

Related Problems

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.