Home / 13,358-18,987

Finding the Third Proportional to 13,358 and 18,987

Calculator

Solution

The third proportional to 13,358 and 18,987 is: 26,988.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358 : 18,987 = 18,987 : x
  2. Step 2: Convert to fraction form
    13,358/18,987 = 18,987/x
  3. Step 3: Cross multiply
    13,358x = 18,987 × 18,987
  4. Step 4: Simplify right side
    13,358x = 360,506,169
  5. Step 5: Solve for x
    x = 360,506,169/13,358
  6. Step 6: Final answer
    x = 26,988.03

Related Problems

Find third proportional to 6,679 and 9,493.50
Half scale
Find third proportional to 26,716 and 37,974
Double scale
Find third proportional to 13,360 and 18,990
Similar ratio
Find third proportional to 20,037 and 28,480.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.