Home / 12,836-18,921

Finding the Third Proportional to 12,836 and 18,921

Calculator

Solution

The third proportional to 12,836 and 18,921 is: 27,890.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,836 : 18,921 = 18,921 : x
  2. Step 2: Convert to fraction form
    12,836/18,921 = 18,921/x
  3. Step 3: Cross multiply
    12,836x = 18,921 × 18,921
  4. Step 4: Simplify right side
    12,836x = 358,004,241
  5. Step 5: Solve for x
    x = 358,004,241/12,836
  6. Step 6: Final answer
    x = 27,890.64

Related Problems

Find third proportional to 6,418 and 9,460.50
Half scale
Find third proportional to 25,672 and 37,842
Double scale
Find third proportional to 12,838 and 18,924
Similar ratio
Find third proportional to 19,254 and 28,381.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.