Home / 15,291-20,151

Finding the Third Proportional to 15,291 and 20,151

Calculator

Solution

The third proportional to 15,291 and 20,151 is: 26,555.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,291 : 20,151 = 20,151 : x
  2. Step 2: Convert to fraction form
    15,291/20,151 = 20,151/x
  3. Step 3: Cross multiply
    15,291x = 20,151 × 20,151
  4. Step 4: Simplify right side
    15,291x = 406,062,801
  5. Step 5: Solve for x
    x = 406,062,801/15,291
  6. Step 6: Final answer
    x = 26,555.67

Related Problems

Find third proportional to 7,645.50 and 10,075.50
Half scale
Find third proportional to 30,582 and 40,302
Double scale
Find third proportional to 15,293 and 20,154
Similar ratio
Find third proportional to 22,936.50 and 30,226.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.