Home / 15,618-19,782

Finding the Third Proportional to 15,618 and 19,782

Calculator

Solution

The third proportional to 15,618 and 19,782 is: 25,056.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618 : 19,782 = 19,782 : x
  2. Step 2: Convert to fraction form
    15,618/19,782 = 19,782/x
  3. Step 3: Cross multiply
    15,618x = 19,782 × 19,782
  4. Step 4: Simplify right side
    15,618x = 391,327,524
  5. Step 5: Solve for x
    x = 391,327,524/15,618
  6. Step 6: Final answer
    x = 25,056.19

Related Problems

Find third proportional to 7,809 and 9,891
Half scale
Find third proportional to 31,236 and 39,564
Double scale
Find third proportional to 15,620 and 19,785
Similar ratio
Find third proportional to 23,427 and 29,673
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.