Finding the Fourth Proportional to 20,186,330.80, 30,243,410.70 and 12,284,699.80
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Solution
The fourth proportional to 20,186,330.80, 30,243,410.70 and 12,284,699.80 is: 18,405,089.32
Step by Step Solution
- Step 1: Write the proportion equation
20,186,330.80 : 30,243,410.70 = 12,284,699.80 : x - Step 2: Convert to fraction form
20,186,330.80/30,243,410.70 = 12,284,699.80/x - Step 3: Cross multiply
20,186,330.80x = 30,243,410.70 × 12,284,699.80 - Step 4: Simplify right side
20,186,330.80x = 371,531,221,377,607.88 - Step 5: Solve for x
x = 371,531,221,377,607.88/20,186,330.80 - Step 6: Final answer
x = 18,405,089.32
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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.