Finding the Fourth Proportional to 18,381,068.20, 27,572,639.10 and 5,601,989.80
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Solution
The fourth proportional to 18,381,068.20, 27,572,639.10 and 5,601,989.80 is: 8,403,300.69
Step by Step Solution
- Step 1: Write the proportion equation
18,381,068.20 : 27,572,639.10 = 5,601,989.80 : x - Step 2: Convert to fraction form
18,381,068.20/27,572,639.10 = 5,601,989.80/x - Step 3: Cross multiply
18,381,068.20x = 27,572,639.10 × 5,601,989.80 - Step 4: Simplify right side
18,381,068.20x = 154,461,642,997,281.19 - Step 5: Solve for x
x = 154,461,642,997,281.19/18,381,068.20 - Step 6: Final answer
x = 8,403,300.69
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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.