Home / 8,703-15,678

Finding the Third Proportional to 8,703 and 15,678

Calculator

Solution

The third proportional to 8,703 and 15,678 is: 28,243.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703 : 15,678 = 15,678 : x
  2. Step 2: Convert to fraction form
    8,703/15,678 = 15,678/x
  3. Step 3: Cross multiply
    8,703x = 15,678 × 15,678
  4. Step 4: Simplify right side
    8,703x = 245,799,684
  5. Step 5: Solve for x
    x = 245,799,684/8,703
  6. Step 6: Final answer
    x = 28,243.10

Related Problems

Find third proportional to 4,351.50 and 7,839
Half scale
Find third proportional to 17,406 and 31,356
Double scale
Find third proportional to 8,705 and 15,682
Similar ratio
Find third proportional to 13,054.50 and 23,517
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.