Finding the Fourth Proportional to 21,707,916.53, 29,956,983.75 and 11,918,994.75
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Solution
The fourth proportional to 21,707,916.53, 29,956,983.75 and 11,918,994.75 is: 16,448,245.12
Step by Step Solution
- Step 1: Write the proportion equation
21,707,916.53 : 29,956,983.75 = 11,918,994.75 : x - Step 2: Convert to fraction form
21,707,916.53/29,956,983.75 = 11,918,994.75/x - Step 3: Cross multiply
21,707,916.53x = 29,956,983.75 × 11,918,994.75 - Step 4: Simplify right side
21,707,916.53x = 357,057,132,042,085.31 - Step 5: Solve for x
x = 357,057,132,042,085.31/21,707,916.53 - Step 6: Final answer
x = 16,448,245.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.