Home / 15,040-19,520

Finding the Third Proportional to 15,040 and 19,520

Calculator

Solution

The third proportional to 15,040 and 19,520 is: 25,334.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,040 : 19,520 = 19,520 : x
  2. Step 2: Convert to fraction form
    15,040/19,520 = 19,520/x
  3. Step 3: Cross multiply
    15,040x = 19,520 × 19,520
  4. Step 4: Simplify right side
    15,040x = 381,030,400
  5. Step 5: Solve for x
    x = 381,030,400/15,040
  6. Step 6: Final answer
    x = 25,334.47

Related Problems

Find third proportional to 7,520 and 9,760
Half scale
Find third proportional to 30,080 and 39,040
Double scale
Find third proportional to 15,042 and 19,523
Similar ratio
Find third proportional to 22,560 and 29,280
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.