Finding the Fourth Proportional to 20,747,898.36, 31,123,342.26 and 7,968,403.08
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Solution
The fourth proportional to 20,747,898.36, 31,123,342.26 and 7,968,403.08 is: 11,953,178.68
Step by Step Solution
- Step 1: Write the proportion equation
20,747,898.36 : 31,123,342.26 = 7,968,403.08 : x - Step 2: Convert to fraction form
20,747,898.36/31,123,342.26 = 7,968,403.08/x - Step 3: Cross multiply
20,747,898.36x = 31,123,342.26 × 7,968,403.08 - Step 4: Simplify right side
20,747,898.36x = 248,003,336,324,478.19 - Step 5: Solve for x
x = 248,003,336,324,478.19/20,747,898.36 - Step 6: Final answer
x = 11,953,178.68
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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.