Finding the Fourth Proportional to 15,270,781.60, 21,072,425.36 and 8,990,311.84
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Solution
The fourth proportional to 15,270,781.60, 21,072,425.36 and 8,990,311.84 is: 12,405,892.52
Step by Step Solution
- Step 1: Write the proportion equation
15,270,781.60 : 21,072,425.36 = 8,990,311.84 : x - Step 2: Convert to fraction form
15,270,781.60/21,072,425.36 = 8,990,311.84/x - Step 3: Cross multiply
15,270,781.60x = 21,072,425.36 × 8,990,311.84 - Step 4: Simplify right side
15,270,781.60x = 189,447,675,211,524.25 - Step 5: Solve for x
x = 189,447,675,211,524.25/15,270,781.60 - Step 6: Final answer
x = 12,405,892.52
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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.