Home / 15,840-17,298

Finding the Third Proportional to 15,840 and 17,298

Calculator

Solution

The third proportional to 15,840 and 17,298 is: 18,890.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840 : 17,298 = 17,298 : x
  2. Step 2: Convert to fraction form
    15,840/17,298 = 17,298/x
  3. Step 3: Cross multiply
    15,840x = 17,298 × 17,298
  4. Step 4: Simplify right side
    15,840x = 299,220,804
  5. Step 5: Solve for x
    x = 299,220,804/15,840
  6. Step 6: Final answer
    x = 18,890.20

Related Problems

Find third proportional to 7,920 and 8,649
Half scale
Find third proportional to 31,680 and 34,596
Double scale
Find third proportional to 15,842 and 17,300
Similar ratio
Find third proportional to 23,760 and 25,947
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.