Finding the Fourth Proportional to 21,647,417.78, 29,862,110.70 and 13,384,838.84
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Solution
The fourth proportional to 21,647,417.78, 29,862,110.70 and 13,384,838.84 is: 18,464,074.70
Step by Step Solution
- Step 1: Write the proportion equation
21,647,417.78 : 29,862,110.70 = 13,384,838.84 : x - Step 2: Convert to fraction form
21,647,417.78/29,862,110.70 = 13,384,838.84/x - Step 3: Cross multiply
21,647,417.78x = 29,862,110.70 × 13,384,838.84 - Step 4: Simplify right side
21,647,417.78x = 399,699,538,992,429.06 - Step 5: Solve for x
x = 399,699,538,992,429.06/21,647,417.78 - Step 6: Final answer
x = 18,464,074.70
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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.