Home / 18,428-39,800

Finding the Third Proportional to 18,428 and 39,800

Calculator

Solution

The third proportional to 18,428 and 39,800 is: 85,958.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428 : 39,800 = 39,800 : x
  2. Step 2: Convert to fraction form
    18,428/39,800 = 39,800/x
  3. Step 3: Cross multiply
    18,428x = 39,800 × 39,800
  4. Step 4: Simplify right side
    18,428x = 1,584,040,000
  5. Step 5: Solve for x
    x = 1,584,040,000/18,428
  6. Step 6: Final answer
    x = 85,958.32

Related Problems

Find third proportional to 9,214 and 19,900
Half scale
Find third proportional to 36,856 and 79,600
Double scale
Find third proportional to 18,430 and 39,804
Similar ratio
Find third proportional to 27,642 and 59,700
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.