Home / 65,540-98,310-21,764

Finding the Fourth Proportional to 65,540, 98,310 and 21,764

Calculator

Solution

The fourth proportional to 65,540, 98,310 and 21,764 is: 32,646

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,540 : 98,310 = 21,764 : x
  2. Step 2: Convert to fraction form
    65,540/98,310 = 21,764/x
  3. Step 3: Cross multiply
    65,540x = 98,310 × 21,764
  4. Step 4: Simplify right side
    65,540x = 2,139,618,840
  5. Step 5: Solve for x
    x = 2,139,618,840/65,540
  6. Step 6: Final answer
    x = 32,646

Related Problems

Find fourth proportional to 32,770, 49,155 and 10,882
Half scale
Find fourth proportional to 131,080, 196,620 and 43,528
Double scale
Find fourth proportional to 65,541, 98,311.50 and 21,765
Similar ratio
Find fourth proportional to 98,310, 147,465 and 32,646
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.