Home / 64,620-96,930-20,844

Finding the Fourth Proportional to 64,620, 96,930 and 20,844

Calculator

Solution

The fourth proportional to 64,620, 96,930 and 20,844 is: 31,266

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,620 : 96,930 = 20,844 : x
  2. Step 2: Convert to fraction form
    64,620/96,930 = 20,844/x
  3. Step 3: Cross multiply
    64,620x = 96,930 × 20,844
  4. Step 4: Simplify right side
    64,620x = 2,020,408,920
  5. Step 5: Solve for x
    x = 2,020,408,920/64,620
  6. Step 6: Final answer
    x = 31,266

Related Problems

Find fourth proportional to 32,310, 48,465 and 10,422
Half scale
Find fourth proportional to 129,240, 193,860 and 41,688
Double scale
Find fourth proportional to 64,621, 96,931.50 and 20,845
Similar ratio
Find fourth proportional to 96,930, 145,395 and 31,266
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.