Home / 28,390-66,311

Finding the Third Proportional to 28,390 and 66,311

Calculator

Solution

The third proportional to 28,390 and 66,311 is: 154,883.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,390 : 66,311 = 66,311 : x
  2. Step 2: Convert to fraction form
    28,390/66,311 = 66,311/x
  3. Step 3: Cross multiply
    28,390x = 66,311 × 66,311
  4. Step 4: Simplify right side
    28,390x = 4,397,148,721
  5. Step 5: Solve for x
    x = 4,397,148,721/28,390
  6. Step 6: Final answer
    x = 154,883.72

Related Problems

Find third proportional to 14,195 and 33,155.50
Half scale
Find third proportional to 56,780 and 132,622
Double scale
Find third proportional to 28,392 and 66,316
Similar ratio
Find third proportional to 42,585 and 99,466.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.