Finding the Fourth Proportional to 18,636,689.31, 27,953,982.48 and 8,258,919.49
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Solution
The fourth proportional to 18,636,689.31, 27,953,982.48 and 8,258,919.49 is: 12,387,913.27
Step by Step Solution
- Step 1: Write the proportion equation
18,636,689.31 : 27,953,982.48 = 8,258,919.49 : x - Step 2: Convert to fraction form
18,636,689.31/27,953,982.48 = 8,258,919.49/x - Step 3: Cross multiply
18,636,689.31x = 27,953,982.48 × 8,258,919.49 - Step 4: Simplify right side
18,636,689.31x = 230,869,690,727,190.53 - Step 5: Solve for x
x = 230,869,690,727,190.53/18,636,689.31 - Step 6: Final answer
x = 12,387,913.27
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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.