Finding the Fourth Proportional to 21,283,045.20, 29,370,634.62 and 12,115,687.92
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Solution
The fourth proportional to 21,283,045.20, 29,370,634.62 and 12,115,687.92 is: 16,719,667.68
Step by Step Solution
- Step 1: Write the proportion equation
21,283,045.20 : 29,370,634.62 = 12,115,687.92 : x - Step 2: Convert to fraction form
21,283,045.20/29,370,634.62 = 12,115,687.92/x - Step 3: Cross multiply
21,283,045.20x = 29,370,634.62 × 12,115,687.92 - Step 4: Simplify right side
21,283,045.20x = 355,845,443,068,267.81 - Step 5: Solve for x
x = 355,845,443,068,267.81/21,283,045.20 - Step 6: Final answer
x = 16,719,667.68
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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.