Home / 9,890-21,316

Finding the Third Proportional to 9,890 and 21,316

Calculator

Solution

The third proportional to 9,890 and 21,316 is: 45,942.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,890 : 21,316 = 21,316 : x
  2. Step 2: Convert to fraction form
    9,890/21,316 = 21,316/x
  3. Step 3: Cross multiply
    9,890x = 21,316 × 21,316
  4. Step 4: Simplify right side
    9,890x = 454,371,856
  5. Step 5: Solve for x
    x = 454,371,856/9,890
  6. Step 6: Final answer
    x = 45,942.55

Related Problems

Find third proportional to 4,945 and 10,658
Half scale
Find third proportional to 19,780 and 42,632
Double scale
Find third proportional to 9,892 and 21,320
Similar ratio
Find third proportional to 14,835 and 31,974
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.