Home / 15,120-20,607.75

Finding the Third Proportional to 15,120 and 20,607.75

Calculator

Solution

The third proportional to 15,120 and 20,607.75 is: 28,087.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120 : 20,607.75 = 20,607.75 : x
  2. Step 2: Convert to fraction form
    15,120/20,607.75 = 20,607.75/x
  3. Step 3: Cross multiply
    15,120x = 20,607.75 × 20,607.75
  4. Step 4: Simplify right side
    15,120x = 424,679,360.06
  5. Step 5: Solve for x
    x = 424,679,360.06/15,120
  6. Step 6: Final answer
    x = 28,087.26

Related Problems

Find third proportional to 7,560 and 10,303.88
Half scale
Find third proportional to 30,240 and 41,215.50
Double scale
Find third proportional to 15,122 and 20,610
Similar ratio
Find third proportional to 22,680 and 30,911.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.