Home / 8,700-19,128

Finding the Third Proportional to 8,700 and 19,128

Calculator

Solution

The third proportional to 8,700 and 19,128 is: 42,055.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700 : 19,128 = 19,128 : x
  2. Step 2: Convert to fraction form
    8,700/19,128 = 19,128/x
  3. Step 3: Cross multiply
    8,700x = 19,128 × 19,128
  4. Step 4: Simplify right side
    8,700x = 365,880,384
  5. Step 5: Solve for x
    x = 365,880,384/8,700
  6. Step 6: Final answer
    x = 42,055.22

Related Problems

Find third proportional to 4,350 and 9,564
Half scale
Find third proportional to 17,400 and 38,256
Double scale
Find third proportional to 8,702 and 19,132
Similar ratio
Find third proportional to 13,050 and 28,692
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.