Home / 11,040.80-15,240-8,207.40

Finding the Fourth Proportional to 11,040.80, 15,240 and 8,207.40

Calculator

Solution

The fourth proportional to 11,040.80, 15,240 and 8,207.40 is: 11,328.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,040.80 : 15,240 = 8,207.40 : x
  2. Step 2: Convert to fraction form
    11,040.80/15,240 = 8,207.40/x
  3. Step 3: Cross multiply
    11,040.80x = 15,240 × 8,207.40
  4. Step 4: Simplify right side
    11,040.80x = 125,080,776
  5. Step 5: Solve for x
    x = 125,080,776/11,040.80
  6. Step 6: Final answer
    x = 11,328.96

Related Problems

Find fourth proportional to 5,520.40, 7,620 and 4,103.70
Half scale
Find fourth proportional to 22,081.60, 30,480 and 16,414.80
Double scale
Find fourth proportional to 11,041.80, 15,241.38 and 8,208.40
Similar ratio
Find fourth proportional to 16,561.20, 22,860 and 12,311.10
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.