Finding the Fourth Proportional to 12,785,477.76, 17,644,495.68 and 7,352,974.08
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Solution
The fourth proportional to 12,785,477.76, 17,644,495.68 and 7,352,974.08 is: 10,147,412.70
Step by Step Solution
- Step 1: Write the proportion equation
12,785,477.76 : 17,644,495.68 = 7,352,974.08 : x - Step 2: Convert to fraction form
12,785,477.76/17,644,495.68 = 7,352,974.08/x - Step 3: Cross multiply
12,785,477.76x = 17,644,495.68 × 7,352,974.08 - Step 4: Simplify right side
12,785,477.76x = 129,739,519,389,711.97 - Step 5: Solve for x
x = 129,739,519,389,711.97/12,785,477.76 - Step 6: Final answer
x = 10,147,412.70
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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.