Home / 21,184.75-31,777.31-5,389.79

Finding the Fourth Proportional to 21,184.75, 31,777.31 and 5,389.79

Calculator

Solution

The fourth proportional to 21,184.75, 31,777.31 and 5,389.79 is: 8,084.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.75 : 31,777.31 = 5,389.79 : x
  2. Step 2: Convert to fraction form
    21,184.75/31,777.31 = 5,389.79/x
  3. Step 3: Cross multiply
    21,184.75x = 31,777.31 × 5,389.79
  4. Step 4: Simplify right side
    21,184.75x = 171,273,026.89
  5. Step 5: Solve for x
    x = 171,273,026.89/21,184.75
  6. Step 6: Final answer
    x = 8,084.73

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.