Home / 43,978-65,967-11,146

Finding the Fourth Proportional to 43,978, 65,967 and 11,146

Calculator

Solution

The fourth proportional to 43,978, 65,967 and 11,146 is: 16,719

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,978 : 65,967 = 11,146 : x
  2. Step 2: Convert to fraction form
    43,978/65,967 = 11,146/x
  3. Step 3: Cross multiply
    43,978x = 65,967 × 11,146
  4. Step 4: Simplify right side
    43,978x = 735,268,182
  5. Step 5: Solve for x
    x = 735,268,182/43,978
  6. Step 6: Final answer
    x = 16,719

Related Problems

Find fourth proportional to 21,989, 32,983.50 and 5,573
Half scale
Find fourth proportional to 87,956, 131,934 and 22,292
Double scale
Find fourth proportional to 43,979, 65,968.50 and 11,147
Similar ratio
Find fourth proportional to 65,967, 98,950.50 and 16,719
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.