Home / 28,020-43,740

Finding the Third Proportional to 28,020 and 43,740

Calculator

Solution

The third proportional to 28,020 and 43,740 is: 68,279.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020 : 43,740 = 43,740 : x
  2. Step 2: Convert to fraction form
    28,020/43,740 = 43,740/x
  3. Step 3: Cross multiply
    28,020x = 43,740 × 43,740
  4. Step 4: Simplify right side
    28,020x = 1,913,187,600
  5. Step 5: Solve for x
    x = 1,913,187,600/28,020
  6. Step 6: Final answer
    x = 68,279.36

Related Problems

Find third proportional to 14,010 and 21,870
Half scale
Find third proportional to 56,040 and 87,480
Double scale
Find third proportional to 28,022 and 43,743
Similar ratio
Find third proportional to 42,030 and 65,610
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.