Home / 13,656-21,276

Finding the Third Proportional to 13,656 and 21,276

Calculator

Solution

The third proportional to 13,656 and 21,276 is: 33,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656 : 21,276 = 21,276 : x
  2. Step 2: Convert to fraction form
    13,656/21,276 = 21,276/x
  3. Step 3: Cross multiply
    13,656x = 21,276 × 21,276
  4. Step 4: Simplify right side
    13,656x = 452,668,176
  5. Step 5: Solve for x
    x = 452,668,176/13,656
  6. Step 6: Final answer
    x = 33,147.93

Related Problems

Find third proportional to 6,828 and 10,638
Half scale
Find third proportional to 27,312 and 42,552
Double scale
Find third proportional to 13,658 and 21,279
Similar ratio
Find third proportional to 20,484 and 31,914
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.