Home / 25.81-39.10

Finding the Third Proportional to 25.81 and 39.10

Calculator

Solution

The third proportional to 25.81 and 39.10 is: 59.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.81 : 39.10 = 39.10 : x
  2. Step 2: Convert to fraction form
    25.81/39.10 = 39.10/x
  3. Step 3: Cross multiply
    25.81x = 39.10 × 39.10
  4. Step 4: Simplify right side
    25.81x = 1,528.81
  5. Step 5: Solve for x
    x = 1,528.81/25.81
  6. Step 6: Final answer
    x = 59.24

Related Problems

Find third proportional to 12.90 and 19.55
Half scale
Find third proportional to 51.61 and 78.20
Double scale
Find third proportional to 28 and 42
Similar ratio
Find third proportional to 38.71 and 58.65
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.