Home / 14,430-21,645-3,486

Finding the Fourth Proportional to 14,430, 21,645 and 3,486

Calculator

Solution

The fourth proportional to 14,430, 21,645 and 3,486 is: 5,229

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,430 : 21,645 = 3,486 : x
  2. Step 2: Convert to fraction form
    14,430/21,645 = 3,486/x
  3. Step 3: Cross multiply
    14,430x = 21,645 × 3,486
  4. Step 4: Simplify right side
    14,430x = 75,454,470
  5. Step 5: Solve for x
    x = 75,454,470/14,430
  6. Step 6: Final answer
    x = 5,229

Related Problems

Find fourth proportional to 7,215, 10,822.50 and 1,743
Half scale
Find fourth proportional to 28,860, 43,290 and 6,972
Double scale
Find fourth proportional to 14,431, 21,646.50 and 3,487
Similar ratio
Find fourth proportional to 21,645, 32,467.50 and 5,229
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.