Finding the Fourth Proportional to 21,399,778.04, 29,531,861.14 and 12,576,860.54
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Solution
The fourth proportional to 21,399,778.04, 29,531,861.14 and 12,576,860.54 is: 17,356,165.95
Step by Step Solution
- Step 1: Write the proportion equation
21,399,778.04 : 29,531,861.14 = 12,576,860.54 : x - Step 2: Convert to fraction form
21,399,778.04/29,531,861.14 = 12,576,860.54/x - Step 3: Cross multiply
21,399,778.04x = 29,531,861.14 × 12,576,860.54 - Step 4: Simplify right side
21,399,778.04x = 371,418,099,044,425.38 - Step 5: Solve for x
x = 371,418,099,044,425.38/21,399,778.04 - Step 6: Final answer
x = 17,356,165.95
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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.