Home / 43,240-64,860-10,408

Finding the Fourth Proportional to 43,240, 64,860 and 10,408

Calculator

Solution

The fourth proportional to 43,240, 64,860 and 10,408 is: 15,612

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,240 : 64,860 = 10,408 : x
  2. Step 2: Convert to fraction form
    43,240/64,860 = 10,408/x
  3. Step 3: Cross multiply
    43,240x = 64,860 × 10,408
  4. Step 4: Simplify right side
    43,240x = 675,062,880
  5. Step 5: Solve for x
    x = 675,062,880/43,240
  6. Step 6: Final answer
    x = 15,612

Related Problems

Find fourth proportional to 21,620, 32,430 and 5,204
Half scale
Find fourth proportional to 86,480, 129,720 and 20,816
Double scale
Find fourth proportional to 43,241, 64,861.50 and 10,409
Similar ratio
Find fourth proportional to 64,860, 97,290 and 15,612
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.