Home / 8,490-20,072

Finding the Third Proportional to 8,490 and 20,072

Calculator

Solution

The third proportional to 8,490 and 20,072 is: 47,454.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490 : 20,072 = 20,072 : x
  2. Step 2: Convert to fraction form
    8,490/20,072 = 20,072/x
  3. Step 3: Cross multiply
    8,490x = 20,072 × 20,072
  4. Step 4: Simplify right side
    8,490x = 402,885,184
  5. Step 5: Solve for x
    x = 402,885,184/8,490
  6. Step 6: Final answer
    x = 47,454.09

Related Problems

Find third proportional to 4,245 and 10,036
Half scale
Find third proportional to 16,980 and 40,144
Double scale
Find third proportional to 8,492 and 20,077
Similar ratio
Find third proportional to 12,735 and 30,108
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.