Finding the Fourth Proportional to 13,207,943.20, 19,811,914.80 and 7,539,239.20
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Solution
The fourth proportional to 13,207,943.20, 19,811,914.80 and 7,539,239.20 is: 11,308,858.80
Step by Step Solution
- Step 1: Write the proportion equation
13,207,943.20 : 19,811,914.80 = 7,539,239.20 : x - Step 2: Convert to fraction form
13,207,943.20/19,811,914.80 = 7,539,239.20/x - Step 3: Cross multiply
13,207,943.20x = 19,811,914.80 × 7,539,239.20 - Step 4: Simplify right side
13,207,943.20x = 149,366,764,687,220.16 - Step 5: Solve for x
x = 149,366,764,687,220.16/13,207,943.20 - Step 6: Final answer
x = 11,308,858.80
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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.