Home / 39,406.20-54,379.80-21,500.76

Finding the Fourth Proportional to 39,406.20, 54,379.80 and 21,500.76

Calculator

Solution

The fourth proportional to 39,406.20, 54,379.80 and 21,500.76 is: 29,670.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,406.20 : 54,379.80 = 21,500.76 : x
  2. Step 2: Convert to fraction form
    39,406.20/54,379.80 = 21,500.76/x
  3. Step 3: Cross multiply
    39,406.20x = 54,379.80 × 21,500.76
  4. Step 4: Simplify right side
    39,406.20x = 1,169,207,028.65
  5. Step 5: Solve for x
    x = 1,169,207,028.65/39,406.20
  6. Step 6: Final answer
    x = 29,670.64

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.