Finding the Fourth Proportional to 20,885,671.28, 31,328,463.84 and 11,783,636.99
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Solution
The fourth proportional to 20,885,671.28, 31,328,463.84 and 11,783,636.99 is: 17,675,431.17
Step by Step Solution
- Step 1: Write the proportion equation
20,885,671.28 : 31,328,463.84 = 11,783,636.99 : x - Step 2: Convert to fraction form
20,885,671.28/31,328,463.84 = 11,783,636.99/x - Step 3: Cross multiply
20,885,671.28x = 31,328,463.84 × 11,783,636.99 - Step 4: Simplify right side
20,885,671.28x = 369,163,245,261,552.19 - Step 5: Solve for x
x = 369,163,245,261,552.19/20,885,671.28 - Step 6: Final answer
x = 17,675,431.17
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.