Finding the Fourth Proportional to 22,765,974.36, 31,417,138.62 and 12,311,990.46
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Solution
The fourth proportional to 22,765,974.36, 31,417,138.62 and 12,311,990.46 is: 16,990,597.67
Step by Step Solution
- Step 1: Write the proportion equation
22,765,974.36 : 31,417,138.62 = 12,311,990.46 : x - Step 2: Convert to fraction form
22,765,974.36/31,417,138.62 = 12,311,990.46/x - Step 3: Cross multiply
22,765,974.36x = 31,417,138.62 × 12,311,990.46 - Step 4: Simplify right side
22,765,974.36x = 386,807,510,969,937.62 - Step 5: Solve for x
x = 386,807,510,969,937.62/22,765,974.36 - Step 6: Final answer
x = 16,990,597.67
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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.