Home / 12,420-26,220

Finding the Third Proportional to 12,420 and 26,220

Calculator

Solution

The third proportional to 12,420 and 26,220 is: 55,353.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420 : 26,220 = 26,220 : x
  2. Step 2: Convert to fraction form
    12,420/26,220 = 26,220/x
  3. Step 3: Cross multiply
    12,420x = 26,220 × 26,220
  4. Step 4: Simplify right side
    12,420x = 687,488,400
  5. Step 5: Solve for x
    x = 687,488,400/12,420
  6. Step 6: Final answer
    x = 55,353.33

Related Problems

Find third proportional to 6,210 and 13,110
Half scale
Find third proportional to 24,840 and 52,440
Double scale
Find third proportional to 12,422 and 26,224
Similar ratio
Find third proportional to 18,630 and 39,330
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.