Finding the Fourth Proportional to 20,451,218.64, 28,232,908.68 and 12,718,752.08
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Solution
The fourth proportional to 20,451,218.64, 28,232,908.68 and 12,718,752.08 is: 17,558,238.08
Step by Step Solution
- Step 1: Write the proportion equation
20,451,218.64 : 28,232,908.68 = 12,718,752.08 : x - Step 2: Convert to fraction form
20,451,218.64/28,232,908.68 = 12,718,752.08/x - Step 3: Cross multiply
20,451,218.64x = 28,232,908.68 × 12,718,752.08 - Step 4: Simplify right side
20,451,218.64x = 359,087,365,998,200.06 - Step 5: Solve for x
x = 359,087,365,998,200.06/20,451,218.64 - Step 6: Final answer
x = 17,558,238.08
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.