Finding the Fourth Proportional to 21,538,424.21, 29,723,215.28 and 11,748,911.90
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Solution
The fourth proportional to 21,538,424.21, 29,723,215.28 and 11,748,911.90 is: 16,213,601.99
Step by Step Solution
- Step 1: Write the proportion equation
21,538,424.21 : 29,723,215.28 = 11,748,911.90 : x - Step 2: Convert to fraction form
21,538,424.21/29,723,215.28 = 11,748,911.90/x - Step 3: Cross multiply
21,538,424.21x = 29,723,215.28 × 11,748,911.90 - Step 4: Simplify right side
21,538,424.21x = 349,215,437,502,093.19 - Step 5: Solve for x
x = 349,215,437,502,093.19/21,538,424.21 - Step 6: Final answer
x = 16,213,601.99
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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.