Home / 7,916-12,178

Finding the Third Proportional to 7,916 and 12,178

Calculator

Solution

The third proportional to 7,916 and 12,178 is: 18,734.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916 : 12,178 = 12,178 : x
  2. Step 2: Convert to fraction form
    7,916/12,178 = 12,178/x
  3. Step 3: Cross multiply
    7,916x = 12,178 × 12,178
  4. Step 4: Simplify right side
    7,916x = 148,303,684
  5. Step 5: Solve for x
    x = 148,303,684/7,916
  6. Step 6: Final answer
    x = 18,734.67

Related Problems

Find third proportional to 3,958 and 6,089
Half scale
Find third proportional to 15,832 and 24,356
Double scale
Find third proportional to 7,918 and 12,181
Similar ratio
Find third proportional to 11,874 and 18,267
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.