Home / 20,928-28,704

Finding the Third Proportional to 20,928 and 28,704

Calculator

Solution

The third proportional to 20,928 and 28,704 is: 39,369.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928 : 28,704 = 28,704 : x
  2. Step 2: Convert to fraction form
    20,928/28,704 = 28,704/x
  3. Step 3: Cross multiply
    20,928x = 28,704 × 28,704
  4. Step 4: Simplify right side
    20,928x = 823,919,616
  5. Step 5: Solve for x
    x = 823,919,616/20,928
  6. Step 6: Final answer
    x = 39,369.25

Related Problems

Find third proportional to 10,464 and 14,352
Half scale
Find third proportional to 41,856 and 57,408
Double scale
Find third proportional to 20,930 and 28,707
Similar ratio
Find third proportional to 31,392 and 43,056
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.