Finding the Fourth Proportional to 19,676,342.22, 29,453,978.70 and 12,838,191.18
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Solution
The fourth proportional to 19,676,342.22, 29,453,978.70 and 12,838,191.18 is: 19,217,789.84
Step by Step Solution
- Step 1: Write the proportion equation
19,676,342.22 : 29,453,978.70 = 12,838,191.18 : x - Step 2: Convert to fraction form
19,676,342.22/29,453,978.70 = 12,838,191.18/x - Step 3: Cross multiply
19,676,342.22x = 29,453,978.70 × 12,838,191.18 - Step 4: Simplify right side
19,676,342.22x = 378,135,809,562,247.88 - Step 5: Solve for x
x = 378,135,809,562,247.88/19,676,342.22 - Step 6: Final answer
x = 19,217,789.84
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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.