Finding the Fourth Proportional to 19,721,705.19, 27,215,431.05 and 11,019,949.32
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Solution
The fourth proportional to 19,721,705.19, 27,215,431.05 and 11,019,949.32 is: 15,207,238.32
Step by Step Solution
- Step 1: Write the proportion equation
19,721,705.19 : 27,215,431.05 = 11,019,949.32 : x - Step 2: Convert to fraction form
19,721,705.19/27,215,431.05 = 11,019,949.32/x - Step 3: Cross multiply
19,721,705.19x = 27,215,431.05 × 11,019,949.32 - Step 4: Simplify right side
19,721,705.19x = 299,912,670,892,954.38 - Step 5: Solve for x
x = 299,912,670,892,954.38/19,721,705.19 - Step 6: Final answer
x = 15,207,238.32
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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.