Home / 7,887-12,672

Finding the Third Proportional to 7,887 and 12,672

Calculator

Solution

The third proportional to 7,887 and 12,672 is: 20,360.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887 : 12,672 = 12,672 : x
  2. Step 2: Convert to fraction form
    7,887/12,672 = 12,672/x
  3. Step 3: Cross multiply
    7,887x = 12,672 × 12,672
  4. Step 4: Simplify right side
    7,887x = 160,579,584
  5. Step 5: Solve for x
    x = 160,579,584/7,887
  6. Step 6: Final answer
    x = 20,360.03

Related Problems

Find third proportional to 3,943.50 and 6,336
Half scale
Find third proportional to 15,774 and 25,344
Double scale
Find third proportional to 7,889 and 12,675
Similar ratio
Find third proportional to 11,830.50 and 19,008
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.