Home / 12,990-28,382

Finding the Third Proportional to 12,990 and 28,382

Calculator

Solution

The third proportional to 12,990 and 28,382 is: 62,012.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990 : 28,382 = 28,382 : x
  2. Step 2: Convert to fraction form
    12,990/28,382 = 28,382/x
  3. Step 3: Cross multiply
    12,990x = 28,382 × 28,382
  4. Step 4: Simplify right side
    12,990x = 805,537,924
  5. Step 5: Solve for x
    x = 805,537,924/12,990
  6. Step 6: Final answer
    x = 62,012.16

Related Problems

Find third proportional to 6,495 and 14,191
Half scale
Find third proportional to 25,980 and 56,764
Double scale
Find third proportional to 12,992 and 28,386
Similar ratio
Find third proportional to 19,485 and 42,573
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.