Finding the Fourth Proportional to 11,824,891.21, 16,315,564.83 and 7,178,559.09
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Solution
The fourth proportional to 11,824,891.21, 16,315,564.83 and 7,178,559.09 is: 9,904,720.82
Step by Step Solution
- Step 1: Write the proportion equation
11,824,891.21 : 16,315,564.83 = 7,178,559.09 : x - Step 2: Convert to fraction form
11,824,891.21/16,315,564.83 = 7,178,559.09/x - Step 3: Cross multiply
11,824,891.21x = 16,315,564.83 × 7,178,559.09 - Step 4: Simplify right side
11,824,891.21x = 117,122,246,130,777.83 - Step 5: Solve for x
x = 117,122,246,130,777.83/11,824,891.21 - Step 6: Final answer
x = 9,904,720.82
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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.