Home / 8,472-12,816

Finding the Third Proportional to 8,472 and 12,816

Calculator

Solution

The third proportional to 8,472 and 12,816 is: 19,387.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472 : 12,816 = 12,816 : x
  2. Step 2: Convert to fraction form
    8,472/12,816 = 12,816/x
  3. Step 3: Cross multiply
    8,472x = 12,816 × 12,816
  4. Step 4: Simplify right side
    8,472x = 164,249,856
  5. Step 5: Solve for x
    x = 164,249,856/8,472
  6. Step 6: Final answer
    x = 19,387.38

Related Problems

Find third proportional to 4,236 and 6,408
Half scale
Find third proportional to 16,944 and 25,632
Double scale
Find third proportional to 8,474 and 12,819
Similar ratio
Find third proportional to 12,708 and 19,224
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.