Finding the Fourth Proportional to 21,319,083.72, 29,420,423.61 and 11,529,527.70
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Solution
The fourth proportional to 21,319,083.72, 29,420,423.61 and 11,529,527.70 is: 15,910,795.86
Step by Step Solution
- Step 1: Write the proportion equation
21,319,083.72 : 29,420,423.61 = 11,529,527.70 : x - Step 2: Convert to fraction form
21,319,083.72/29,420,423.61 = 11,529,527.70/x - Step 3: Cross multiply
21,319,083.72x = 29,420,423.61 × 11,529,527.70 - Step 4: Simplify right side
21,319,083.72x = 339,203,588,957,228.94 - Step 5: Solve for x
x = 339,203,588,957,228.94/21,319,083.72 - Step 6: Final answer
x = 15,910,795.86
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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.