Home / 8,620-13,258

Finding the Third Proportional to 8,620 and 13,258

Calculator

Solution

The third proportional to 8,620 and 13,258 is: 20,391.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620 : 13,258 = 13,258 : x
  2. Step 2: Convert to fraction form
    8,620/13,258 = 13,258/x
  3. Step 3: Cross multiply
    8,620x = 13,258 × 13,258
  4. Step 4: Simplify right side
    8,620x = 175,774,564
  5. Step 5: Solve for x
    x = 175,774,564/8,620
  6. Step 6: Final answer
    x = 20,391.48

Related Problems

Find third proportional to 4,310 and 6,629
Half scale
Find third proportional to 17,240 and 26,516
Double scale
Find third proportional to 8,622 and 13,261
Similar ratio
Find third proportional to 12,930 and 19,887
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.