Finding the Fourth Proportional to 15,196,408.62, 20,971,077.84 and 8,227,159.62
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Solution
The fourth proportional to 15,196,408.62, 20,971,077.84 and 8,227,159.62 is: 11,353,498.65
Step by Step Solution
- Step 1: Write the proportion equation
15,196,408.62 : 20,971,077.84 = 8,227,159.62 : x - Step 2: Convert to fraction form
15,196,408.62/20,971,077.84 = 8,227,159.62/x - Step 3: Cross multiply
15,196,408.62x = 20,971,077.84 × 8,227,159.62 - Step 4: Simplify right side
15,196,408.62x = 172,532,404,793,124.81 - Step 5: Solve for x
x = 172,532,404,793,124.81/15,196,408.62 - Step 6: Final answer
x = 11,353,498.65
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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.