Home / 14,208-21,312-4,480

Finding the Fourth Proportional to 14,208, 21,312 and 4,480

Calculator

Solution

The fourth proportional to 14,208, 21,312 and 4,480 is: 6,720

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,208 : 21,312 = 4,480 : x
  2. Step 2: Convert to fraction form
    14,208/21,312 = 4,480/x
  3. Step 3: Cross multiply
    14,208x = 21,312 × 4,480
  4. Step 4: Simplify right side
    14,208x = 95,477,760
  5. Step 5: Solve for x
    x = 95,477,760/14,208
  6. Step 6: Final answer
    x = 6,720

Related Problems

Find fourth proportional to 7,104, 10,656 and 2,240
Half scale
Find fourth proportional to 28,416, 42,624 and 8,960
Double scale
Find fourth proportional to 14,209, 21,313.50 and 4,481
Similar ratio
Find fourth proportional to 21,312, 31,968 and 6,720
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.