Finding the Fourth Proportional to 12,636,122.87, 17,436,351 and 7,129,176.68
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Solution
The fourth proportional to 12,636,122.87, 17,436,351 and 7,129,176.68 is: 9,837,418.35
Step by Step Solution
- Step 1: Write the proportion equation
12,636,122.87 : 17,436,351 = 7,129,176.68 : x - Step 2: Convert to fraction form
12,636,122.87/17,436,351 = 7,129,176.68/x - Step 3: Cross multiply
12,636,122.87x = 17,436,351 × 7,129,176.68 - Step 4: Simplify right side
12,636,122.87x = 124,306,826,933,494.67 - Step 5: Solve for x
x = 124,306,826,933,494.67/12,636,122.87 - Step 6: Final answer
x = 9,837,418.35
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1.5x scale
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.