Finding the Fourth Proportional to 13,690.28, 20,535.36 and 3,302
Calculator
Solution
The fourth proportional to 13,690.28, 20,535.36 and 3,302 is: 4,952.99
Step by Step Solution
- Step 1: Write the proportion equation
13,690.28 : 20,535.36 = 3,302 : x - Step 2: Convert to fraction form
13,690.28/20,535.36 = 3,302/x - Step 3: Cross multiply
13,690.28x = 20,535.36 × 3,302 - Step 4: Simplify right side
13,690.28x = 67,807,758.72 - Step 5: Solve for x
x = 67,807,758.72/13,690.28 - Step 6: Final answer
x = 4,952.99
Related Problems
Find fourth proportional to 6,845.14, 10,267.68 and 1,651
Half scale
Find fourth proportional to 27,380.56, 41,070.72 and 6,604
Double scale
Find fourth proportional to 13,691.28, 20,536.86 and 3,303
Similar ratio
Find fourth proportional to 20,535.42, 30,803.04 and 4,953
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.