Finding the Fourth Proportional to 12,370,156.21, 18,555,817.52 and 10,207,169.47
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Solution
The fourth proportional to 12,370,156.21, 18,555,817.52 and 10,207,169.47 is: 15,311,235.43
Step by Step Solution
- Step 1: Write the proportion equation
12,370,156.21 : 18,555,817.52 = 10,207,169.47 : x - Step 2: Convert to fraction form
12,370,156.21/18,555,817.52 = 10,207,169.47/x - Step 3: Cross multiply
12,370,156.21x = 18,555,817.52 × 10,207,169.47 - Step 4: Simplify right side
12,370,156.21x = 189,402,374,081,035.12 - Step 5: Solve for x
x = 189,402,374,081,035.12/12,370,156.21 - Step 6: Final answer
x = 15,311,235.43
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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.