Home / 9,988-15,900

Finding the Third Proportional to 9,988 and 15,900

Calculator

Solution

The third proportional to 9,988 and 15,900 is: 25,311.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988 : 15,900 = 15,900 : x
  2. Step 2: Convert to fraction form
    9,988/15,900 = 15,900/x
  3. Step 3: Cross multiply
    9,988x = 15,900 × 15,900
  4. Step 4: Simplify right side
    9,988x = 252,810,000
  5. Step 5: Solve for x
    x = 252,810,000/9,988
  6. Step 6: Final answer
    x = 25,311.37

Related Problems

Find third proportional to 4,994 and 7,950
Half scale
Find third proportional to 19,976 and 31,800
Double scale
Find third proportional to 9,990 and 15,903
Similar ratio
Find third proportional to 14,982 and 23,850
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.