Home / 12,110.40-16,920-12,110.40

Finding the Fourth Proportional to 12,110.40, 16,920 and 12,110.40

Calculator

Solution

The fourth proportional to 12,110.40, 16,920 and 12,110.40 is: 16,920

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,110.40 : 16,920 = 12,110.40 : x
  2. Step 2: Convert to fraction form
    12,110.40/16,920 = 12,110.40/x
  3. Step 3: Cross multiply
    12,110.40x = 16,920 × 12,110.40
  4. Step 4: Simplify right side
    12,110.40x = 204,907,968
  5. Step 5: Solve for x
    x = 204,907,968/12,110.40
  6. Step 6: Final answer
    x = 16,920

Related Problems

Find fourth proportional to 6,055.20, 8,460 and 6,055.20
Half scale
Find fourth proportional to 24,220.80, 33,840 and 24,220.80
Double scale
Find fourth proportional to 12,111.40, 16,921.40 and 12,111.40
Similar ratio
Find fourth proportional to 18,165.60, 25,380 and 18,165.60
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.