Home / 14,280-15,720

Finding the Third Proportional to 14,280 and 15,720

Calculator

Solution

The third proportional to 14,280 and 15,720 is: 17,305.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280 : 15,720 = 15,720 : x
  2. Step 2: Convert to fraction form
    14,280/15,720 = 15,720/x
  3. Step 3: Cross multiply
    14,280x = 15,720 × 15,720
  4. Step 4: Simplify right side
    14,280x = 247,118,400
  5. Step 5: Solve for x
    x = 247,118,400/14,280
  6. Step 6: Final answer
    x = 17,305.21

Related Problems

Find third proportional to 7,140 and 7,860
Half scale
Find third proportional to 28,560 and 31,440
Double scale
Find third proportional to 14,282 and 15,722
Similar ratio
Find third proportional to 21,420 and 23,580
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.