Home / 21,072-45,428

Finding the Third Proportional to 21,072 and 45,428

Calculator

Solution

The third proportional to 21,072 and 45,428 is: 97,935.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072 : 45,428 = 45,428 : x
  2. Step 2: Convert to fraction form
    21,072/45,428 = 45,428/x
  3. Step 3: Cross multiply
    21,072x = 45,428 × 45,428
  4. Step 4: Simplify right side
    21,072x = 2,063,703,184
  5. Step 5: Solve for x
    x = 2,063,703,184/21,072
  6. Step 6: Final answer
    x = 97,935.80

Related Problems

Find third proportional to 10,536 and 22,714
Half scale
Find third proportional to 42,144 and 90,856
Double scale
Find third proportional to 21,074 and 45,432
Similar ratio
Find third proportional to 31,608 and 68,142
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.