Finding the Fourth Proportional to 15,883,860.15, 21,920,163.30 and 8,914,970.97
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Solution
The fourth proportional to 15,883,860.15, 21,920,163.30 and 8,914,970.97 is: 12,302,904.81
Step by Step Solution
- Step 1: Write the proportion equation
15,883,860.15 : 21,920,163.30 = 8,914,970.97 : x - Step 2: Convert to fraction form
15,883,860.15/21,920,163.30 = 8,914,970.97/x - Step 3: Cross multiply
15,883,860.15x = 21,920,163.30 × 8,914,970.97 - Step 4: Simplify right side
15,883,860.15x = 195,417,619,477,159.44 - Step 5: Solve for x
x = 195,417,619,477,159.44/15,883,860.15 - Step 6: Final answer
x = 12,302,904.81
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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.