Finding the Fourth Proportional to 21,407,630.63, 29,542,545.68 and 11,618,072.28
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Solution
The fourth proportional to 21,407,630.63, 29,542,545.68 and 11,618,072.28 is: 16,032,948.11
Step by Step Solution
- Step 1: Write the proportion equation
21,407,630.63 : 29,542,545.68 = 11,618,072.28 : x - Step 2: Convert to fraction form
21,407,630.63/29,542,545.68 = 11,618,072.28/x - Step 3: Cross multiply
21,407,630.63x = 29,542,545.68 × 11,618,072.28 - Step 4: Simplify right side
21,407,630.63x = 343,227,430,987,351.38 - Step 5: Solve for x
x = 343,227,430,987,351.38/21,407,630.63 - Step 6: Final answer
x = 16,032,948.11
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1.5x scale
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.