Finding the Fourth Proportional to 20,816,909.21, 28,730,340.96 and 11,994,671.54
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Solution
The fourth proportional to 20,816,909.21, 28,730,340.96 and 11,994,671.54 is: 16,554,378.92
Step by Step Solution
- Step 1: Write the proportion equation
20,816,909.21 : 28,730,340.96 = 11,994,671.54 : x - Step 2: Convert to fraction form
20,816,909.21/28,730,340.96 = 11,994,671.54/x - Step 3: Cross multiply
20,816,909.21x = 28,730,340.96 × 11,994,671.54 - Step 4: Simplify right side
20,816,909.21x = 344,611,003,047,408.25 - Step 5: Solve for x
x = 344,611,003,047,408.25/20,816,909.21 - Step 6: Final answer
x = 16,554,378.92
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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.