Home / 15,600-21,006

Finding the Third Proportional to 15,600 and 21,006

Calculator

Solution

The third proportional to 15,600 and 21,006 is: 28,285.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,600 : 21,006 = 21,006 : x
  2. Step 2: Convert to fraction form
    15,600/21,006 = 21,006/x
  3. Step 3: Cross multiply
    15,600x = 21,006 × 21,006
  4. Step 4: Simplify right side
    15,600x = 441,252,036
  5. Step 5: Solve for x
    x = 441,252,036/15,600
  6. Step 6: Final answer
    x = 28,285.39

Related Problems

Find third proportional to 7,800 and 10,503
Half scale
Find third proportional to 31,200 and 42,012
Double scale
Find third proportional to 15,602 and 21,009
Similar ratio
Find third proportional to 23,400 and 31,509
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.