Home / 18,630-38,178

Finding the Third Proportional to 18,630 and 38,178

Calculator

Solution

The third proportional to 18,630 and 38,178 is: 78,237.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630 : 38,178 = 38,178 : x
  2. Step 2: Convert to fraction form
    18,630/38,178 = 38,178/x
  3. Step 3: Cross multiply
    18,630x = 38,178 × 38,178
  4. Step 4: Simplify right side
    18,630x = 1,457,559,684
  5. Step 5: Solve for x
    x = 1,457,559,684/18,630
  6. Step 6: Final answer
    x = 78,237.23

Related Problems

Find third proportional to 9,315 and 19,089
Half scale
Find third proportional to 37,260 and 76,356
Double scale
Find third proportional to 18,632 and 38,182
Similar ratio
Find third proportional to 27,945 and 57,267
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.