Finding the Fourth Proportional to 20,235,392.92, 27,933,961.65 and 12,903,081.76
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Solution
The fourth proportional to 20,235,392.92, 27,933,961.65 and 12,903,081.76 is: 17,812,067.82
Step by Step Solution
- Step 1: Write the proportion equation
20,235,392.92 : 27,933,961.65 = 12,903,081.76 : x - Step 2: Convert to fraction form
20,235,392.92/27,933,961.65 = 12,903,081.76/x - Step 3: Cross multiply
20,235,392.92x = 27,933,961.65 × 12,903,081.76 - Step 4: Simplify right side
20,235,392.92x = 360,434,190,916,340.31 - Step 5: Solve for x
x = 360,434,190,916,340.31/20,235,392.92 - Step 6: Final answer
x = 17,812,067.82
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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.