Home / 15,870-18,282

Finding the Third Proportional to 15,870 and 18,282

Calculator

Solution

The third proportional to 15,870 and 18,282 is: 21,060.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,870 : 18,282 = 18,282 : x
  2. Step 2: Convert to fraction form
    15,870/18,282 = 18,282/x
  3. Step 3: Cross multiply
    15,870x = 18,282 × 18,282
  4. Step 4: Simplify right side
    15,870x = 334,231,524
  5. Step 5: Solve for x
    x = 334,231,524/15,870
  6. Step 6: Final answer
    x = 21,060.59

Related Problems

Find third proportional to 7,935 and 9,141
Half scale
Find third proportional to 31,740 and 36,564
Double scale
Find third proportional to 15,872 and 18,284
Similar ratio
Find third proportional to 23,805 and 27,423
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.