Home / 18,458-37,780

Finding the Third Proportional to 18,458 and 37,780

Calculator

Solution

The third proportional to 18,458 and 37,780 is: 77,328.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458 : 37,780 = 37,780 : x
  2. Step 2: Convert to fraction form
    18,458/37,780 = 37,780/x
  3. Step 3: Cross multiply
    18,458x = 37,780 × 37,780
  4. Step 4: Simplify right side
    18,458x = 1,427,328,400
  5. Step 5: Solve for x
    x = 1,427,328,400/18,458
  6. Step 6: Final answer
    x = 77,328.44

Related Problems

Find third proportional to 9,229 and 18,890
Half scale
Find third proportional to 36,916 and 75,560
Double scale
Find third proportional to 18,460 and 37,784
Similar ratio
Find third proportional to 27,687 and 56,670
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.