Finding the Fourth Proportional to 20,209,842.05, 27,889,554.63 and 11,508,014.66
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Solution
The fourth proportional to 20,209,842.05, 27,889,554.63 and 11,508,014.66 is: 15,881,044.62
Step by Step Solution
- Step 1: Write the proportion equation
20,209,842.05 : 27,889,554.63 = 11,508,014.66 : x - Step 2: Convert to fraction form
20,209,842.05/27,889,554.63 = 11,508,014.66/x - Step 3: Cross multiply
20,209,842.05x = 27,889,554.63 × 11,508,014.66 - Step 4: Simplify right side
20,209,842.05x = 320,953,403,365,705.31 - Step 5: Solve for x
x = 320,953,403,365,705.31/20,209,842.05 - Step 6: Final answer
x = 15,881,044.62
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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.