Home / 17,787-39,340

Finding the Third Proportional to 17,787 and 39,340

Calculator

Solution

The third proportional to 17,787 and 39,340 is: 87,009.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,787 : 39,340 = 39,340 : x
  2. Step 2: Convert to fraction form
    17,787/39,340 = 39,340/x
  3. Step 3: Cross multiply
    17,787x = 39,340 × 39,340
  4. Step 4: Simplify right side
    17,787x = 1,547,635,600
  5. Step 5: Solve for x
    x = 1,547,635,600/17,787
  6. Step 6: Final answer
    x = 87,009.37

Related Problems

Find third proportional to 8,893.50 and 19,670
Half scale
Find third proportional to 35,574 and 78,680
Double scale
Find third proportional to 17,789 and 39,344
Similar ratio
Find third proportional to 26,680.50 and 59,010
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.