Home / 21,156-31,734-8,844

Finding the Fourth Proportional to 21,156, 31,734 and 8,844

Calculator

Solution

The fourth proportional to 21,156, 31,734 and 8,844 is: 13,266

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156 : 31,734 = 8,844 : x
  2. Step 2: Convert to fraction form
    21,156/31,734 = 8,844/x
  3. Step 3: Cross multiply
    21,156x = 31,734 × 8,844
  4. Step 4: Simplify right side
    21,156x = 280,655,496
  5. Step 5: Solve for x
    x = 280,655,496/21,156
  6. Step 6: Final answer
    x = 13,266

Related Problems

Find fourth proportional to 10,578, 15,867 and 4,422
Half scale
Find fourth proportional to 42,312, 63,468 and 17,688
Double scale
Find fourth proportional to 21,157, 31,735.50 and 8,845
Similar ratio
Find fourth proportional to 31,734, 47,601 and 13,266
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.