Finding the Fourth Proportional to 15,578,954.97, 21,497,831.39 and 8,609,549.12
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Solution
The fourth proportional to 15,578,954.97, 21,497,831.39 and 8,609,549.12 is: 11,880,555.25
Step by Step Solution
- Step 1: Write the proportion equation
15,578,954.97 : 21,497,831.39 = 8,609,549.12 : x - Step 2: Convert to fraction form
15,578,954.97/21,497,831.39 = 8,609,549.12/x - Step 3: Cross multiply
15,578,954.97x = 21,497,831.39 × 8,609,549.12 - Step 4: Simplify right side
15,578,954.97x = 185,086,635,325,682.88 - Step 5: Solve for x
x = 185,086,635,325,682.88/15,578,954.97 - Step 6: Final answer
x = 11,880,555.25
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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.