Finding the Fourth Proportional to 20,558,867.23, 28,371,270.12 and 11,264,960.44
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Solution
The fourth proportional to 20,558,867.23, 28,371,270.12 and 11,264,960.44 is: 15,545,663.67
Step by Step Solution
- Step 1: Write the proportion equation
20,558,867.23 : 28,371,270.12 = 11,264,960.44 : x - Step 2: Convert to fraction form
20,558,867.23/28,371,270.12 = 11,264,960.44/x - Step 3: Cross multiply
20,558,867.23x = 28,371,270.12 × 11,264,960.44 - Step 4: Simplify right side
20,558,867.23x = 319,601,235,399,663.19 - Step 5: Solve for x
x = 319,601,235,399,663.19/20,558,867.23 - Step 6: Final answer
x = 15,545,663.67
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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.