Home / 19,778.16-29,672-8,091.42

Finding the Fourth Proportional to 19,778.16, 29,672 and 8,091.42

Calculator

Solution

The fourth proportional to 19,778.16, 29,672 and 8,091.42 is: 12,139.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,778.16 : 29,672 = 8,091.42 : x
  2. Step 2: Convert to fraction form
    19,778.16/29,672 = 8,091.42/x
  3. Step 3: Cross multiply
    19,778.16x = 29,672 × 8,091.42
  4. Step 4: Simplify right side
    19,778.16x = 240,088,614.24
  5. Step 5: Solve for x
    x = 240,088,614.24/19,778.16
  6. Step 6: Final answer
    x = 12,139.08

Related Problems

Find fourth proportional to 9,889.08, 14,836 and 4,045.71
Half scale
Find fourth proportional to 39,556.32, 59,344 and 16,182.84
Double scale
Find fourth proportional to 19,779.16, 29,673.50 and 8,092.42
Similar ratio
Find fourth proportional to 29,667.24, 44,508 and 12,137.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.