Home / 15,658-21,471

Finding the Third Proportional to 15,658 and 21,471

Calculator

Solution

The third proportional to 15,658 and 21,471 is: 29,442.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,658 : 21,471 = 21,471 : x
  2. Step 2: Convert to fraction form
    15,658/21,471 = 21,471/x
  3. Step 3: Cross multiply
    15,658x = 21,471 × 21,471
  4. Step 4: Simplify right side
    15,658x = 461,003,841
  5. Step 5: Solve for x
    x = 461,003,841/15,658
  6. Step 6: Final answer
    x = 29,442.06

Related Problems

Find third proportional to 7,829 and 10,735.50
Half scale
Find third proportional to 31,316 and 42,942
Double scale
Find third proportional to 15,660 and 21,474
Similar ratio
Find third proportional to 23,487 and 32,206.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.