Home / 12,860-19,290-3,132

Finding the Fourth Proportional to 12,860, 19,290 and 3,132

Calculator

Solution

The fourth proportional to 12,860, 19,290 and 3,132 is: 4,698

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,860 : 19,290 = 3,132 : x
  2. Step 2: Convert to fraction form
    12,860/19,290 = 3,132/x
  3. Step 3: Cross multiply
    12,860x = 19,290 × 3,132
  4. Step 4: Simplify right side
    12,860x = 60,416,280
  5. Step 5: Solve for x
    x = 60,416,280/12,860
  6. Step 6: Final answer
    x = 4,698

Related Problems

Find fourth proportional to 6,430, 9,645 and 1,566
Half scale
Find fourth proportional to 25,720, 38,580 and 6,264
Double scale
Find fourth proportional to 12,861, 19,291.50 and 3,133
Similar ratio
Find fourth proportional to 19,290, 28,935 and 4,698
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.