Home / 8,752-21,120

Finding the Third Proportional to 8,752 and 21,120

Calculator

Solution

The third proportional to 8,752 and 21,120 is: 50,966.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,752 : 21,120 = 21,120 : x
  2. Step 2: Convert to fraction form
    8,752/21,120 = 21,120/x
  3. Step 3: Cross multiply
    8,752x = 21,120 × 21,120
  4. Step 4: Simplify right side
    8,752x = 446,054,400
  5. Step 5: Solve for x
    x = 446,054,400/8,752
  6. Step 6: Final answer
    x = 50,966.00

Related Problems

Find third proportional to 4,376 and 10,560
Half scale
Find third proportional to 17,504 and 42,240
Double scale
Find third proportional to 8,754 and 21,125
Similar ratio
Find third proportional to 13,128 and 31,680
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.