Home / 21,564-28,977

Finding the Third Proportional to 21,564 and 28,977

Calculator

Solution

The third proportional to 21,564 and 28,977 is: 38,938.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,564 : 28,977 = 28,977 : x
  2. Step 2: Convert to fraction form
    21,564/28,977 = 28,977/x
  3. Step 3: Cross multiply
    21,564x = 28,977 × 28,977
  4. Step 4: Simplify right side
    21,564x = 839,666,529
  5. Step 5: Solve for x
    x = 839,666,529/21,564
  6. Step 6: Final answer
    x = 38,938.35

Related Problems

Find third proportional to 10,782 and 14,488.50
Half scale
Find third proportional to 43,128 and 57,954
Double scale
Find third proportional to 21,566 and 28,980
Similar ratio
Find third proportional to 32,346 and 43,465.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.