Home / 18,855-28,287

Finding the Third Proportional to 18,855 and 28,287

Calculator

Solution

The third proportional to 18,855 and 28,287 is: 42,437.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855 : 28,287 = 28,287 : x
  2. Step 2: Convert to fraction form
    18,855/28,287 = 28,287/x
  3. Step 3: Cross multiply
    18,855x = 28,287 × 28,287
  4. Step 4: Simplify right side
    18,855x = 800,154,369
  5. Step 5: Solve for x
    x = 800,154,369/18,855
  6. Step 6: Final answer
    x = 42,437.25

Related Problems

Find third proportional to 9,427.50 and 14,143.50
Half scale
Find third proportional to 37,710 and 56,574
Double scale
Find third proportional to 18,857 and 28,290
Similar ratio
Find third proportional to 28,282.50 and 42,430.50
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.