Finding the Fourth Proportional to 21,716,928.80, 29,961,861.36 and 13,881,024.44
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Solution
The fourth proportional to 21,716,928.80, 29,961,861.36 and 13,881,024.44 is: 19,151,019.63
Step by Step Solution
- Step 1: Write the proportion equation
21,716,928.80 : 29,961,861.36 = 13,881,024.44 : x - Step 2: Convert to fraction form
21,716,928.80/29,961,861.36 = 13,881,024.44/x - Step 3: Cross multiply
21,716,928.80x = 29,961,861.36 × 13,881,024.44 - Step 4: Simplify right side
21,716,928.80x = 415,901,329,806,051.62 - Step 5: Solve for x
x = 415,901,329,806,051.62/21,716,928.80 - Step 6: Final answer
x = 19,151,019.63
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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.