Finding the Fourth Proportional to 14,486,553.12, 19,991,377.80 and 7,960,163.61
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Solution
The fourth proportional to 14,486,553.12, 19,991,377.80 and 7,960,163.61 is: 10,984,989.79
Step by Step Solution
- Step 1: Write the proportion equation
14,486,553.12 : 19,991,377.80 = 7,960,163.61 : x - Step 2: Convert to fraction form
14,486,553.12/19,991,377.80 = 7,960,163.61/x - Step 3: Cross multiply
14,486,553.12x = 19,991,377.80 × 7,960,163.61 - Step 4: Simplify right side
14,486,553.12x = 159,134,638,077,321.88 - Step 5: Solve for x
x = 159,134,638,077,321.88/14,486,553.12 - Step 6: Final answer
x = 10,984,989.79
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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.