Finding the Fourth Proportional to 18,917,783.16, 28,376,675.11 and 4,540,850.95
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Solution
The fourth proportional to 18,917,783.16, 28,376,675.11 and 4,540,850.95 is: 6,811,276.51
Step by Step Solution
- Step 1: Write the proportion equation
18,917,783.16 : 28,376,675.11 = 4,540,850.95 : x - Step 2: Convert to fraction form
18,917,783.16/28,376,675.11 = 4,540,850.95/x - Step 3: Cross multiply
18,917,783.16x = 28,376,675.11 × 4,540,850.95 - Step 4: Simplify right side
18,917,783.16x = 128,854,252,131,084.86 - Step 5: Solve for x
x = 128,854,252,131,084.86/18,917,783.16 - Step 6: Final answer
x = 6,811,276.51
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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.