Finding the Fourth Proportional to 18,348,548.30, 27,531,679.80 and 12,945,564.80
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Solution
The fourth proportional to 18,348,548.30, 27,531,679.80 and 12,945,564.80 is: 19,424,596.38
Step by Step Solution
- Step 1: Write the proportion equation
18,348,548.30 : 27,531,679.80 = 12,945,564.80 : x - Step 2: Convert to fraction form
18,348,548.30/27,531,679.80 = 12,945,564.80/x - Step 3: Cross multiply
18,348,548.30x = 27,531,679.80 × 12,945,564.80 - Step 4: Simplify right side
18,348,548.30x = 356,413,144,903,751.06 - Step 5: Solve for x
x = 356,413,144,903,751.06/18,348,548.30 - Step 6: Final answer
x = 19,424,596.38
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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.