Home / 21,181.23-31,749.67-7,136.40

Finding the Fourth Proportional to 21,181.23, 31,749.67 and 7,136.40

Calculator

Solution

The fourth proportional to 21,181.23, 31,749.67 and 7,136.40 is: 10,697.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.23 : 31,749.67 = 7,136.40 : x
  2. Step 2: Convert to fraction form
    21,181.23/31,749.67 = 7,136.40/x
  3. Step 3: Cross multiply
    21,181.23x = 31,749.67 × 7,136.40
  4. Step 4: Simplify right side
    21,181.23x = 226,578,472.97
  5. Step 5: Solve for x
    x = 226,578,472.97/21,181.23
  6. Step 6: Final answer
    x = 10,697.13

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.