Home / 15,420-31,416

Finding the Third Proportional to 15,420 and 31,416

Calculator

Solution

The third proportional to 15,420 and 31,416 is: 64,005.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420 : 31,416 = 31,416 : x
  2. Step 2: Convert to fraction form
    15,420/31,416 = 31,416/x
  3. Step 3: Cross multiply
    15,420x = 31,416 × 31,416
  4. Step 4: Simplify right side
    15,420x = 986,965,056
  5. Step 5: Solve for x
    x = 986,965,056/15,420
  6. Step 6: Final answer
    x = 64,005.52

Related Problems

Find third proportional to 7,710 and 15,708
Half scale
Find third proportional to 30,840 and 62,832
Double scale
Find third proportional to 15,422 and 31,420
Similar ratio
Find third proportional to 23,130 and 47,124
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.