Home / 21,654-29,882.52-11,718

Finding the Fourth Proportional to 21,654, 29,882.52 and 11,718

Calculator

Solution

The fourth proportional to 21,654, 29,882.52 and 11,718 is: 16,170.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,654 : 29,882.52 = 11,718 : x
  2. Step 2: Convert to fraction form
    21,654/29,882.52 = 11,718/x
  3. Step 3: Cross multiply
    21,654x = 29,882.52 × 11,718
  4. Step 4: Simplify right side
    21,654x = 350,163,369.36
  5. Step 5: Solve for x
    x = 350,163,369.36/21,654
  6. Step 6: Final answer
    x = 16,170.84

Related Problems

Find fourth proportional to 10,827, 14,941.26 and 5,859
Half scale
Find fourth proportional to 43,308, 59,765.04 and 23,436
Double scale
Find fourth proportional to 21,655, 29,883.90 and 11,719
Similar ratio
Find fourth proportional to 32,481, 44,823.78 and 17,577
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.