Finding the Fourth Proportional to 19,681,485.12, 29,520,234.43 and 5,306,006.07
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Solution
The fourth proportional to 19,681,485.12, 29,520,234.43 and 5,306,006.07 is: 7,958,471.74
Step by Step Solution
- Step 1: Write the proportion equation
19,681,485.12 : 29,520,234.43 = 5,306,006.07 : x - Step 2: Convert to fraction form
19,681,485.12/29,520,234.43 = 5,306,006.07/x - Step 3: Cross multiply
19,681,485.12x = 29,520,234.43 × 5,306,006.07 - Step 4: Simplify right side
19,681,485.12x = 156,634,543,073,403 - Step 5: Solve for x
x = 156,634,543,073,403/19,681,485.12 - Step 6: Final answer
x = 7,958,471.74
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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.