Finding the Fourth Proportional to 36,114.40, 54,177.65 and 12,420.99
Calculator
Solution
The fourth proportional to 36,114.40, 54,177.65 and 12,420.99 is: 18,633.57
Step by Step Solution
- Step 1: Write the proportion equation
36,114.40 : 54,177.65 = 12,420.99 : x - Step 2: Convert to fraction form
36,114.40/54,177.65 = 12,420.99/x - Step 3: Cross multiply
36,114.40x = 54,177.65 × 12,420.99 - Step 4: Simplify right side
36,114.40x = 672,940,079.93 - Step 5: Solve for x
x = 672,940,079.93/36,114.40 - Step 6: Final answer
x = 18,633.57
Related Problems
Find fourth proportional to 18,057.20, 27,088.83 and 6,210.50
Half scale
Find fourth proportional to 72,228.80, 108,355.31 and 24,841.98
Double scale
Find fourth proportional to 36,115.40, 54,179.15 and 12,421.99
Similar ratio
Find fourth proportional to 54,171.60, 81,266.48 and 18,631.49
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.