Home / 6,840-13,518

Finding the Third Proportional to 6,840 and 13,518

Calculator

Solution

The third proportional to 6,840 and 13,518 is: 26,715.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,840 : 13,518 = 13,518 : x
  2. Step 2: Convert to fraction form
    6,840/13,518 = 13,518/x
  3. Step 3: Cross multiply
    6,840x = 13,518 × 13,518
  4. Step 4: Simplify right side
    6,840x = 182,736,324
  5. Step 5: Solve for x
    x = 182,736,324/6,840
  6. Step 6: Final answer
    x = 26,715.84

Related Problems

Find third proportional to 3,420 and 6,759
Half scale
Find third proportional to 13,680 and 27,036
Double scale
Find third proportional to 6,842 and 13,522
Similar ratio
Find third proportional to 10,260 and 20,277
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.