Finding the Fourth Proportional to 21,519,510.64, 29,696,031.12 and 11,729,739.44
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Solution
The fourth proportional to 21,519,510.64, 29,696,031.12 and 11,729,739.44 is: 16,186,553.37
Step by Step Solution
- Step 1: Write the proportion equation
21,519,510.64 : 29,696,031.12 = 11,729,739.44 : x - Step 2: Convert to fraction form
21,519,510.64/29,696,031.12 = 11,729,739.44/x - Step 3: Cross multiply
21,519,510.64x = 29,696,031.12 × 11,729,739.44 - Step 4: Simplify right side
21,519,510.64x = 348,326,707,439,731.38 - Step 5: Solve for x
x = 348,326,707,439,731.38/21,519,510.64 - Step 6: Final answer
x = 16,186,553.37
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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.