Home / 20,805.94-28,712.30-11,374.50

Finding the Fourth Proportional to 20,805.94, 28,712.30 and 11,374.50

Calculator

Solution

The fourth proportional to 20,805.94, 28,712.30 and 11,374.50 is: 15,696.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,805.94 : 28,712.30 = 11,374.50 : x
  2. Step 2: Convert to fraction form
    20,805.94/28,712.30 = 11,374.50/x
  3. Step 3: Cross multiply
    20,805.94x = 28,712.30 × 11,374.50
  4. Step 4: Simplify right side
    20,805.94x = 326,587,999.48
  5. Step 5: Solve for x
    x = 326,587,999.48/20,805.94
  6. Step 6: Final answer
    x = 15,696.87

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.