Finding the Fourth Proportional to 18,989,431.71, 28,484,147.93 and 4,612,402.63
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Solution
The fourth proportional to 18,989,431.71, 28,484,147.93 and 4,612,402.63 is: 6,918,604.03
Step by Step Solution
- Step 1: Write the proportion equation
18,989,431.71 : 28,484,147.93 = 4,612,402.63 : x - Step 2: Convert to fraction form
18,989,431.71/28,484,147.93 = 4,612,402.63/x - Step 3: Cross multiply
18,989,431.71x = 28,484,147.93 × 4,612,402.63 - Step 4: Simplify right side
18,989,431.71x = 131,380,358,825,641.05 - Step 5: Solve for x
x = 131,380,358,825,641.05/18,989,431.71 - Step 6: Final answer
x = 6,918,604.03
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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.