Home / 9,138-13,959

Finding the Third Proportional to 9,138 and 13,959

Calculator

Solution

The third proportional to 9,138 and 13,959 is: 21,323.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138 : 13,959 = 13,959 : x
  2. Step 2: Convert to fraction form
    9,138/13,959 = 13,959/x
  3. Step 3: Cross multiply
    9,138x = 13,959 × 13,959
  4. Step 4: Simplify right side
    9,138x = 194,853,681
  5. Step 5: Solve for x
    x = 194,853,681/9,138
  6. Step 6: Final answer
    x = 21,323.45

Related Problems

Find third proportional to 4,569 and 6,979.50
Half scale
Find third proportional to 18,276 and 27,918
Double scale
Find third proportional to 9,140 and 13,962
Similar ratio
Find third proportional to 13,707 and 20,938.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.