Finding the Fourth Proportional to 18,855,313.94, 28,278,486.57 and 5,208,158.13
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Solution
The fourth proportional to 18,855,313.94, 28,278,486.57 and 5,208,158.13 is: 7,810,998.55
Step by Step Solution
- Step 1: Write the proportion equation
18,855,313.94 : 28,278,486.57 = 5,208,158.13 : x - Step 2: Convert to fraction form
18,855,313.94/28,278,486.57 = 5,208,158.13/x - Step 3: Cross multiply
18,855,313.94x = 28,278,486.57 × 5,208,158.13 - Step 4: Simplify right side
18,855,313.94x = 147,278,829,776,898.16 - Step 5: Solve for x
x = 147,278,829,776,898.16/18,855,313.94 - Step 6: Final answer
x = 7,810,998.55
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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.