Home / 7,730-18,685

Finding the Third Proportional to 7,730 and 18,685

Calculator

Solution

The third proportional to 7,730 and 18,685 is: 45,165.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,730 : 18,685 = 18,685 : x
  2. Step 2: Convert to fraction form
    7,730/18,685 = 18,685/x
  3. Step 3: Cross multiply
    7,730x = 18,685 × 18,685
  4. Step 4: Simplify right side
    7,730x = 349,129,225
  5. Step 5: Solve for x
    x = 349,129,225/7,730
  6. Step 6: Final answer
    x = 45,165.49

Related Problems

Find third proportional to 3,865 and 9,342.50
Half scale
Find third proportional to 15,460 and 37,370
Double scale
Find third proportional to 7,732 and 18,690
Similar ratio
Find third proportional to 11,595 and 28,027.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.