Finding the Fourth Proportional to 20,696,738.18, 31,049,651.36 and 6,122,516.72
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Solution
The fourth proportional to 20,696,738.18, 31,049,651.36 and 6,122,516.72 is: 9,185,119.31
Step by Step Solution
- Step 1: Write the proportion equation
20,696,738.18 : 31,049,651.36 = 6,122,516.72 : x - Step 2: Convert to fraction form
20,696,738.18/31,049,651.36 = 6,122,516.72/x - Step 3: Cross multiply
20,696,738.18x = 31,049,651.36 × 6,122,516.72 - Step 4: Simplify right side
20,696,738.18x = 190,102,009,461,828.78 - Step 5: Solve for x
x = 190,102,009,461,828.78/20,696,738.18 - Step 6: Final answer
x = 9,185,119.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.