Finding the Fourth Proportional to 20,639,717.19, 28,482,827.94 and 11,347,445.36
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Solution
The fourth proportional to 20,639,717.19, 28,482,827.94 and 11,347,445.36 is: 15,659,484.61
Step by Step Solution
- Step 1: Write the proportion equation
20,639,717.19 : 28,482,827.94 = 11,347,445.36 : x - Step 2: Convert to fraction form
20,639,717.19/28,482,827.94 = 11,347,445.36/x - Step 3: Cross multiply
20,639,717.19x = 28,482,827.94 × 11,347,445.36 - Step 4: Simplify right side
20,639,717.19x = 323,207,333,605,017.25 - Step 5: Solve for x
x = 323,207,333,605,017.25/20,639,717.19 - Step 6: Final answer
x = 15,659,484.61
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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.