Finding the Fourth Proportional to 20,261,156.90, 30,403,839.49 and 18,612,745.74
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Solution
The fourth proportional to 20,261,156.90, 30,403,839.49 and 18,612,745.74 is: 27,930,237.99
Step by Step Solution
- Step 1: Write the proportion equation
20,261,156.90 : 30,403,839.49 = 18,612,745.74 : x - Step 2: Convert to fraction form
20,261,156.90/30,403,839.49 = 18,612,745.74/x - Step 3: Cross multiply
20,261,156.90x = 30,403,839.49 × 18,612,745.74 - Step 4: Simplify right side
20,261,156.90x = 565,898,934,090,801.75 - Step 5: Solve for x
x = 565,898,934,090,801.75/20,261,156.90 - Step 6: Final answer
x = 27,930,237.99
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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.