Finding the Fourth Proportional to 13,278,977.60, 19,937,128.80 and 10,442,292.80
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Solution
The fourth proportional to 13,278,977.60, 19,937,128.80 and 10,442,292.80 is: 15,678,114.90
Step by Step Solution
- Step 1: Write the proportion equation
13,278,977.60 : 19,937,128.80 = 10,442,292.80 : x - Step 2: Convert to fraction form
13,278,977.60/19,937,128.80 = 10,442,292.80/x - Step 3: Cross multiply
13,278,977.60x = 19,937,128.80 × 10,442,292.80 - Step 4: Simplify right side
13,278,977.60x = 208,189,336,520,912.66 - Step 5: Solve for x
x = 208,189,336,520,912.66/13,278,977.60 - Step 6: Final answer
x = 15,678,114.90
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.