Home / 8,728-13,470

Finding the Third Proportional to 8,728 and 13,470

Calculator

Solution

The third proportional to 8,728 and 13,470 is: 20,788.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728 : 13,470 = 13,470 : x
  2. Step 2: Convert to fraction form
    8,728/13,470 = 13,470/x
  3. Step 3: Cross multiply
    8,728x = 13,470 × 13,470
  4. Step 4: Simplify right side
    8,728x = 181,440,900
  5. Step 5: Solve for x
    x = 181,440,900/8,728
  6. Step 6: Final answer
    x = 20,788.37

Related Problems

Find third proportional to 4,364 and 6,735
Half scale
Find third proportional to 17,456 and 26,940
Double scale
Find third proportional to 8,730 and 13,473
Similar ratio
Find third proportional to 13,092 and 20,205
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.