Home / 7,129.50-11,100

Finding the Third Proportional to 7,129.50 and 11,100

Calculator

Solution

The third proportional to 7,129.50 and 11,100 is: 17,281.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.50 : 11,100 = 11,100 : x
  2. Step 2: Convert to fraction form
    7,129.50/11,100 = 11,100/x
  3. Step 3: Cross multiply
    7,129.50x = 11,100 × 11,100
  4. Step 4: Simplify right side
    7,129.50x = 123,210,000
  5. Step 5: Solve for x
    x = 123,210,000/7,129.50
  6. Step 6: Final answer
    x = 17,281.72

Related Problems

Find third proportional to 3,564.75 and 5,550
Half scale
Find third proportional to 14,259 and 22,200
Double scale
Find third proportional to 7,132 and 11,103
Similar ratio
Find third proportional to 10,694.25 and 16,650
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.