Home / 12,687.23-19,031.75-3,921

Finding the Fourth Proportional to 12,687.23, 19,031.75 and 3,921

Calculator

Solution

The fourth proportional to 12,687.23, 19,031.75 and 3,921 is: 5,881.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.23 : 19,031.75 = 3,921 : x
  2. Step 2: Convert to fraction form
    12,687.23/19,031.75 = 3,921/x
  3. Step 3: Cross multiply
    12,687.23x = 19,031.75 × 3,921
  4. Step 4: Simplify right side
    12,687.23x = 74,623,491.75
  5. Step 5: Solve for x
    x = 74,623,491.75/12,687.23
  6. Step 6: Final answer
    x = 5,881.78

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.