Finding the Fourth Proportional to 13,202,930.31, 18,219,772.32 and 7,321,615.41
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Solution
The fourth proportional to 13,202,930.31, 18,219,772.32 and 7,321,615.41 is: 10,103,678.70
Step by Step Solution
- Step 1: Write the proportion equation
13,202,930.31 : 18,219,772.32 = 7,321,615.41 : x - Step 2: Convert to fraction form
13,202,930.31/18,219,772.32 = 7,321,615.41/x - Step 3: Cross multiply
13,202,930.31x = 18,219,772.32 × 7,321,615.41 - Step 4: Simplify right side
13,202,930.31x = 133,398,165,784,803.45 - Step 5: Solve for x
x = 133,398,165,784,803.45/13,202,930.31 - Step 6: Final answer
x = 10,103,678.70
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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.