Finding the Fourth Proportional to 20,451,216.64, 28,232,905.92 and 12,718,750.08
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Solution
The fourth proportional to 20,451,216.64, 28,232,905.92 and 12,718,750.08 is: 17,558,235.32
Step by Step Solution
- Step 1: Write the proportion equation
20,451,216.64 : 28,232,905.92 = 12,718,750.08 : x - Step 2: Convert to fraction form
20,451,216.64/28,232,905.92 = 12,718,750.08/x - Step 3: Cross multiply
20,451,216.64x = 28,232,905.92 × 12,718,750.08 - Step 4: Simplify right side
20,451,216.64x = 359,087,274,428,632.50 - Step 5: Solve for x
x = 359,087,274,428,632.50/20,451,216.64 - Step 6: Final answer
x = 17,558,235.32
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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.