Finding the Fourth Proportional to 28,772,014.66, 43,128,941.49 and 12,387,986.15
Calculator
Solution
The fourth proportional to 28,772,014.66, 43,128,941.49 and 12,387,986.15 is: 18,569,458.42
Step by Step Solution
- Step 1: Write the proportion equation
28,772,014.66 : 43,128,941.49 = 12,387,986.15 : x - Step 2: Convert to fraction form
28,772,014.66/43,128,941.49 = 12,387,986.15/x - Step 3: Cross multiply
28,772,014.66x = 43,128,941.49 × 12,387,986.15 - Step 4: Simplify right side
28,772,014.66x = 534,280,729,703,488.06 - Step 5: Solve for x
x = 534,280,729,703,488.06/28,772,014.66 - Step 6: Final answer
x = 18,569,458.42
Related Problems
Find fourth proportional to 14,386,007.33, 21,564,470.74 and 6,193,993.07
Half scale
Find fourth proportional to 57,544,029.31, 86,257,882.98 and 24,775,972.30
Double scale
Find fourth proportional to 28,772,015.66, 43,128,942.99 and 12,387,987.15
Similar ratio
Find fourth proportional to 43,158,021.98, 64,693,412.23 and 18,581,979.22
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.