Home / 10,218-15,787

Finding the Third Proportional to 10,218 and 15,787

Calculator

Solution

The third proportional to 10,218 and 15,787 is: 24,391.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218 : 15,787 = 15,787 : x
  2. Step 2: Convert to fraction form
    10,218/15,787 = 15,787/x
  3. Step 3: Cross multiply
    10,218x = 15,787 × 15,787
  4. Step 4: Simplify right side
    10,218x = 249,229,369
  5. Step 5: Solve for x
    x = 249,229,369/10,218
  6. Step 6: Final answer
    x = 24,391.21

Related Problems

Find third proportional to 5,109 and 7,893.50
Half scale
Find third proportional to 20,436 and 31,574
Double scale
Find third proportional to 10,220 and 15,790
Similar ratio
Find third proportional to 15,327 and 23,680.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.