Finding the Fourth Proportional to 20,278,246.74, 27,985,101.12 and 11,579,213.67
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Solution
The fourth proportional to 20,278,246.74, 27,985,101.12 and 11,579,213.67 is: 15,979,954.76
Step by Step Solution
- Step 1: Write the proportion equation
20,278,246.74 : 27,985,101.12 = 11,579,213.67 : x - Step 2: Convert to fraction form
20,278,246.74/27,985,101.12 = 11,579,213.67/x - Step 3: Cross multiply
20,278,246.74x = 27,985,101.12 × 11,579,213.67 - Step 4: Simplify right side
20,278,246.74x = 324,045,465,445,036.31 - Step 5: Solve for x
x = 324,045,465,445,036.31/20,278,246.74 - Step 6: Final answer
x = 15,979,954.76
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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.