Finding the Fourth Proportional to 20,791,924.80, 28,681,336.96 and 12,089,136
Calculator
Solution
The fourth proportional to 20,791,924.80, 28,681,336.96 and 12,089,136 is: 16,676,309.99
Step by Step Solution
- Step 1: Write the proportion equation
20,791,924.80 : 28,681,336.96 = 12,089,136 : x - Step 2: Convert to fraction form
20,791,924.80/28,681,336.96 = 12,089,136/x - Step 3: Cross multiply
20,791,924.80x = 28,681,336.96 × 12,089,136 - Step 4: Simplify right side
20,791,924.80x = 346,732,583,171,266.56 - Step 5: Solve for x
x = 346,732,583,171,266.56/20,791,924.80 - Step 6: Final answer
x = 16,676,309.99
Related Problems
Find fourth proportional to 10,395,962.40, 14,340,668.48 and 6,044,568
Half scale
Find fourth proportional to 41,583,849.60, 57,362,673.92 and 24,178,272
Double scale
Find fourth proportional to 20,791,925.80, 28,681,338.34 and 12,089,137
Similar ratio
Find fourth proportional to 31,187,887.20, 43,022,005.44 and 18,133,704
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.