Finding the Fourth Proportional to 13,545,990.12, 18,693,478.45 and 7,351,036.82
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Solution
The fourth proportional to 13,545,990.12, 18,693,478.45 and 7,351,036.82 is: 10,144,437.37
Step by Step Solution
- Step 1: Write the proportion equation
13,545,990.12 : 18,693,478.45 = 7,351,036.82 : x - Step 2: Convert to fraction form
13,545,990.12/18,693,478.45 = 7,351,036.82/x - Step 3: Cross multiply
13,545,990.12x = 18,693,478.45 × 7,351,036.82 - Step 4: Simplify right side
13,545,990.12x = 137,416,448,379,826.53 - Step 5: Solve for x
x = 137,416,448,379,826.53/13,545,990.12 - Step 6: Final answer
x = 10,144,437.37
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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.