Finding the Fourth Proportional to 19,811,845.92, 29,717,775.36 and 13,078,685.28
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Solution
The fourth proportional to 19,811,845.92, 29,717,775.36 and 13,078,685.28 is: 19,618,032.20
Step by Step Solution
- Step 1: Write the proportion equation
19,811,845.92 : 29,717,775.36 = 13,078,685.28 : x - Step 2: Convert to fraction form
19,811,845.92/29,717,775.36 = 13,078,685.28/x - Step 3: Cross multiply
19,811,845.92x = 29,717,775.36 × 13,078,685.28 - Step 4: Simplify right side
19,811,845.92x = 388,669,431,155,178.69 - Step 5: Solve for x
x = 388,669,431,155,178.69/19,811,845.92 - Step 6: Final answer
x = 19,618,032.20
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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.