Home / 18,489-28,680

Finding the Third Proportional to 18,489 and 28,680

Calculator

Solution

The third proportional to 18,489 and 28,680 is: 44,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,489 : 28,680 = 28,680 : x
  2. Step 2: Convert to fraction form
    18,489/28,680 = 28,680/x
  3. Step 3: Cross multiply
    18,489x = 28,680 × 28,680
  4. Step 4: Simplify right side
    18,489x = 822,542,400
  5. Step 5: Solve for x
    x = 822,542,400/18,489
  6. Step 6: Final answer
    x = 44,488.20

Related Problems

Find third proportional to 9,244.50 and 14,340
Half scale
Find third proportional to 36,978 and 57,360
Double scale
Find third proportional to 18,491 and 28,683
Similar ratio
Find third proportional to 27,733.50 and 43,020
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.