Finding the Fourth Proportional to 21,893,124.79, 30,211,213.74 and 12,102,985.13
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Solution
The fourth proportional to 21,893,124.79, 30,211,213.74 and 12,102,985.13 is: 16,701,401.66
Step by Step Solution
- Step 1: Write the proportion equation
21,893,124.79 : 30,211,213.74 = 12,102,985.13 : x - Step 2: Convert to fraction form
21,893,124.79/30,211,213.74 = 12,102,985.13/x - Step 3: Cross multiply
21,893,124.79x = 30,211,213.74 × 12,102,985.13 - Step 4: Simplify right side
21,893,124.79x = 365,645,870,654,471.69 - Step 5: Solve for x
x = 365,645,870,654,471.69/21,893,124.79 - Step 6: Final answer
x = 16,701,401.66
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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.