Finding the Fourth Proportional to 20,993,423.19, 28,971,058.37 and 11,701,582.31
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Solution
The fourth proportional to 20,993,423.19, 28,971,058.37 and 11,701,582.31 is: 16,148,258.47
Step by Step Solution
- Step 1: Write the proportion equation
20,993,423.19 : 28,971,058.37 = 11,701,582.31 : x - Step 2: Convert to fraction form
20,993,423.19/28,971,058.37 = 11,701,582.31/x - Step 3: Cross multiply
20,993,423.19x = 28,971,058.37 × 11,701,582.31 - Step 4: Simplify right side
20,993,423.19x = 339,007,223,921,006.19 - Step 5: Solve for x
x = 339,007,223,921,006.19/20,993,423.19 - Step 6: Final answer
x = 16,148,258.47
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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.