Home / 7,856-18,168

Finding the Third Proportional to 7,856 and 18,168

Calculator

Solution

The third proportional to 7,856 and 18,168 is: 42,015.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856 : 18,168 = 18,168 : x
  2. Step 2: Convert to fraction form
    7,856/18,168 = 18,168/x
  3. Step 3: Cross multiply
    7,856x = 18,168 × 18,168
  4. Step 4: Simplify right side
    7,856x = 330,076,224
  5. Step 5: Solve for x
    x = 330,076,224/7,856
  6. Step 6: Final answer
    x = 42,015.81

Related Problems

Find third proportional to 3,928 and 9,084
Half scale
Find third proportional to 15,712 and 36,336
Double scale
Find third proportional to 7,858 and 18,173
Similar ratio
Find third proportional to 11,784 and 27,252
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.