Home / 21,672-32,508-7,080

Finding the Fourth Proportional to 21,672, 32,508 and 7,080

Calculator

Solution

The fourth proportional to 21,672, 32,508 and 7,080 is: 10,620

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,672 : 32,508 = 7,080 : x
  2. Step 2: Convert to fraction form
    21,672/32,508 = 7,080/x
  3. Step 3: Cross multiply
    21,672x = 32,508 × 7,080
  4. Step 4: Simplify right side
    21,672x = 230,156,640
  5. Step 5: Solve for x
    x = 230,156,640/21,672
  6. Step 6: Final answer
    x = 10,620

Related Problems

Find fourth proportional to 10,836, 16,254 and 3,540
Half scale
Find fourth proportional to 43,344, 65,016 and 14,160
Double scale
Find fourth proportional to 21,673, 32,509.50 and 7,081
Similar ratio
Find fourth proportional to 32,508, 48,762 and 10,620
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.