Finding the Fourth Proportional to 12,379,636.90, 18,569,455.35 and 7,844,673.70
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Solution
The fourth proportional to 12,379,636.90, 18,569,455.35 and 7,844,673.70 is: 11,767,010.55
Step by Step Solution
- Step 1: Write the proportion equation
12,379,636.90 : 18,569,455.35 = 7,844,673.70 : x - Step 2: Convert to fraction form
12,379,636.90/18,569,455.35 = 7,844,673.70/x - Step 3: Cross multiply
12,379,636.90x = 18,569,455.35 × 7,844,673.70 - Step 4: Simplify right side
12,379,636.90x = 145,671,318,007,469.31 - Step 5: Solve for x
x = 145,671,318,007,469.31/12,379,636.90 - Step 6: Final answer
x = 11,767,010.55
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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.