Finding the Fourth Proportional to 27,720,442.18, 38,249,960.42 and 15,957,436.77
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Solution
The fourth proportional to 27,720,442.18, 38,249,960.42 and 15,957,436.77 is: 22,018,816.32
Step by Step Solution
- Step 1: Write the proportion equation
27,720,442.18 : 38,249,960.42 = 15,957,436.77 : x - Step 2: Convert to fraction form
27,720,442.18/38,249,960.42 = 15,957,436.77/x - Step 3: Cross multiply
27,720,442.18x = 38,249,960.42 × 15,957,436.77 - Step 4: Simplify right side
27,720,442.18x = 610,371,324,586,115.62 - Step 5: Solve for x
x = 610,371,324,586,115.62/27,720,442.18 - Step 6: Final answer
x = 22,018,816.32
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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.