Finding the Fourth Proportional to 20,914,821.48, 28,865,877.75 and 17,424,625.44
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Solution
The fourth proportional to 20,914,821.48, 28,865,877.75 and 17,424,625.44 is: 24,048,835.81
Step by Step Solution
- Step 1: Write the proportion equation
20,914,821.48 : 28,865,877.75 = 17,424,625.44 : x - Step 2: Convert to fraction form
20,914,821.48/28,865,877.75 = 17,424,625.44/x - Step 3: Cross multiply
20,914,821.48x = 28,865,877.75 × 17,424,625.44 - Step 4: Simplify right side
20,914,821.48x = 502,977,107,790,580 - Step 5: Solve for x
x = 502,977,107,790,580/20,914,821.48 - Step 6: Final answer
x = 24,048,835.81
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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.