Finding the Fourth Proportional to 18,211,312.12, 27,319,932.78 and 8,505,630.76
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Solution
The fourth proportional to 18,211,312.12, 27,319,932.78 and 8,505,630.76 is: 12,759,830.76
Step by Step Solution
- Step 1: Write the proportion equation
18,211,312.12 : 27,319,932.78 = 8,505,630.76 : x - Step 2: Convert to fraction form
18,211,312.12/27,319,932.78 = 8,505,630.76/x - Step 3: Cross multiply
18,211,312.12x = 27,319,932.78 × 8,505,630.76 - Step 4: Simplify right side
18,211,312.12x = 232,373,260,614,700.31 - Step 5: Solve for x
x = 232,373,260,614,700.31/18,211,312.12 - Step 6: Final answer
x = 12,759,830.76
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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.