Finding the Fourth Proportional to 21,406,392.74, 29,540,899.32 and 11,616,834.80
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Solution
The fourth proportional to 21,406,392.74, 29,540,899.32 and 11,616,834.80 is: 16,031,273.99
Step by Step Solution
- Step 1: Write the proportion equation
21,406,392.74 : 29,540,899.32 = 11,616,834.80 : x - Step 2: Convert to fraction form
21,406,392.74/29,540,899.32 = 11,616,834.80/x - Step 3: Cross multiply
21,406,392.74x = 29,540,899.32 × 11,616,834.80 - Step 4: Simplify right side
21,406,392.74x = 343,171,747,243,872.38 - Step 5: Solve for x
x = 343,171,747,243,872.38/21,406,392.74 - Step 6: Final answer
x = 16,031,273.99
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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.