Finding the Fourth Proportional to 20,816,720.48, 28,730,079.12 and 11,994,482.08
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Solution
The fourth proportional to 20,816,720.48, 28,730,079.12 and 11,994,482.08 is: 16,554,116.65
Step by Step Solution
- Step 1: Write the proportion equation
20,816,720.48 : 28,730,079.12 = 11,994,482.08 : x - Step 2: Convert to fraction form
20,816,720.48/28,730,079.12 = 11,994,482.08/x - Step 3: Cross multiply
20,816,720.48x = 28,730,079.12 × 11,994,482.08 - Step 4: Simplify right side
20,816,720.48x = 344,602,419,161,822.19 - Step 5: Solve for x
x = 344,602,419,161,822.19/20,816,720.48 - Step 6: Final answer
x = 16,554,116.65
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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.