Finding the Fourth Proportional to 19,687,363.40, 29,531,045.10 and 18,128,469.80
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Solution
The fourth proportional to 19,687,363.40, 29,531,045.10 and 18,128,469.80 is: 27,192,704.70
Step by Step Solution
- Step 1: Write the proportion equation
19,687,363.40 : 29,531,045.10 = 18,128,469.80 : x - Step 2: Convert to fraction form
19,687,363.40/29,531,045.10 = 18,128,469.80/x - Step 3: Cross multiply
19,687,363.40x = 29,531,045.10 × 18,128,469.80 - Step 4: Simplify right side
19,687,363.40x = 535,352,659,257,788 - Step 5: Solve for x
x = 535,352,659,257,788/19,687,363.40 - Step 6: Final answer
x = 27,192,704.70
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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.