Home / 13,776-21,480

Finding the Third Proportional to 13,776 and 21,480

Calculator

Solution

The third proportional to 13,776 and 21,480 is: 33,492.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776 : 21,480 = 21,480 : x
  2. Step 2: Convert to fraction form
    13,776/21,480 = 21,480/x
  3. Step 3: Cross multiply
    13,776x = 21,480 × 21,480
  4. Step 4: Simplify right side
    13,776x = 461,390,400
  5. Step 5: Solve for x
    x = 461,390,400/13,776
  6. Step 6: Final answer
    x = 33,492.33

Related Problems

Find third proportional to 6,888 and 10,740
Half scale
Find third proportional to 27,552 and 42,960
Double scale
Find third proportional to 13,778 and 21,483
Similar ratio
Find third proportional to 20,664 and 32,220
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.