Finding the Fourth Proportional to 21,406,390.74, 29,540,896.56 and 11,616,832.80
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Solution
The fourth proportional to 21,406,390.74, 29,540,896.56 and 11,616,832.80 is: 16,031,271.23
Step by Step Solution
- Step 1: Write the proportion equation
21,406,390.74 : 29,540,896.56 = 11,616,832.80 : x - Step 2: Convert to fraction form
21,406,390.74/29,540,896.56 = 11,616,832.80/x - Step 3: Cross multiply
21,406,390.74x = 29,540,896.56 × 11,616,832.80 - Step 4: Simplify right side
21,406,390.74x = 343,171,656,099,615.19 - Step 5: Solve for x
x = 343,171,656,099,615.19/21,406,390.74 - Step 6: Final answer
x = 16,031,271.23
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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.