Home / 18,369.50-25,350-9,986

Finding the Fourth Proportional to 18,369.50, 25,350 and 9,986

Calculator

Solution

The fourth proportional to 18,369.50, 25,350 and 9,986 is: 13,780.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.50 : 25,350 = 9,986 : x
  2. Step 2: Convert to fraction form
    18,369.50/25,350 = 9,986/x
  3. Step 3: Cross multiply
    18,369.50x = 25,350 × 9,986
  4. Step 4: Simplify right side
    18,369.50x = 253,145,100
  5. Step 5: Solve for x
    x = 253,145,100/18,369.50
  6. Step 6: Final answer
    x = 13,780.73

Related Problems

Find fourth proportional to 9,184.75, 12,675 and 4,993
Half scale
Find fourth proportional to 36,739, 50,700 and 19,972
Double scale
Find fourth proportional to 18,370.50, 25,351.38 and 9,987
Similar ratio
Find fourth proportional to 27,554.25, 38,025 and 14,979
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.