Finding the Fourth Proportional to 21,237,307.68, 29,309,732.10 and 12,982,202.80
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Solution
The fourth proportional to 21,237,307.68, 29,309,732.10 and 12,982,202.80 is: 17,916,813.74
Step by Step Solution
- Step 1: Write the proportion equation
21,237,307.68 : 29,309,732.10 = 12,982,202.80 : x - Step 2: Convert to fraction form
21,237,307.68/29,309,732.10 = 12,982,202.80/x - Step 3: Cross multiply
21,237,307.68x = 29,309,732.10 × 12,982,202.80 - Step 4: Simplify right side
21,237,307.68x = 380,504,886,135,869.94 - Step 5: Solve for x
x = 380,504,886,135,869.94/21,237,307.68 - Step 6: Final answer
x = 17,916,813.74
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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.