Home / 8,488-13,120

Finding the Third Proportional to 8,488 and 13,120

Calculator

Solution

The third proportional to 8,488 and 13,120 is: 20,279.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488 : 13,120 = 13,120 : x
  2. Step 2: Convert to fraction form
    8,488/13,120 = 13,120/x
  3. Step 3: Cross multiply
    8,488x = 13,120 × 13,120
  4. Step 4: Simplify right side
    8,488x = 172,134,400
  5. Step 5: Solve for x
    x = 172,134,400/8,488
  6. Step 6: Final answer
    x = 20,279.74

Related Problems

Find third proportional to 4,244 and 6,560
Half scale
Find third proportional to 16,976 and 26,240
Double scale
Find third proportional to 8,490 and 13,123
Similar ratio
Find third proportional to 12,732 and 19,680
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.