Home / 20,214.64-30,321.96-7,894

Finding the Fourth Proportional to 20,214.64, 30,321.96 and 7,894

Calculator

Solution

The fourth proportional to 20,214.64, 30,321.96 and 7,894 is: 11,841

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214.64 : 30,321.96 = 7,894 : x
  2. Step 2: Convert to fraction form
    20,214.64/30,321.96 = 7,894/x
  3. Step 3: Cross multiply
    20,214.64x = 30,321.96 × 7,894
  4. Step 4: Simplify right side
    20,214.64x = 239,361,552.24
  5. Step 5: Solve for x
    x = 239,361,552.24/20,214.64
  6. Step 6: Final answer
    x = 11,841

Related Problems

Find fourth proportional to 10,107.32, 15,160.98 and 3,947
Half scale
Find fourth proportional to 40,429.28, 60,643.92 and 15,788
Double scale
Find fourth proportional to 20,215.64, 30,323.46 and 7,895
Similar ratio
Find fourth proportional to 30,321.96, 45,482.94 and 11,841
1.5x scale

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.