Home / 12,730-27,420

Finding the Third Proportional to 12,730 and 27,420

Calculator

Solution

The third proportional to 12,730 and 27,420 is: 59,061.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,730 : 27,420 = 27,420 : x
  2. Step 2: Convert to fraction form
    12,730/27,420 = 27,420/x
  3. Step 3: Cross multiply
    12,730x = 27,420 × 27,420
  4. Step 4: Simplify right side
    12,730x = 751,856,400
  5. Step 5: Solve for x
    x = 751,856,400/12,730
  6. Step 6: Final answer
    x = 59,061.78

Related Problems

Find third proportional to 6,365 and 13,710
Half scale
Find third proportional to 25,460 and 54,840
Double scale
Find third proportional to 12,732 and 27,424
Similar ratio
Find third proportional to 19,095 and 41,130
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.