Finding the Fourth Proportional to 15,304,237.60, 21,120,802.64 and 8,428,717.92
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Solution
The fourth proportional to 15,304,237.60, 21,120,802.64 and 8,428,717.92 is: 11,632,156.55
Step by Step Solution
- Step 1: Write the proportion equation
15,304,237.60 : 21,120,802.64 = 8,428,717.92 : x - Step 2: Convert to fraction form
15,304,237.60/21,120,802.64 = 8,428,717.92/x - Step 3: Cross multiply
15,304,237.60x = 21,120,802.64 × 8,428,717.92 - Step 4: Simplify right side
15,304,237.60x = 178,021,287,696,551.31 - Step 5: Solve for x
x = 178,021,287,696,551.31/15,304,237.60 - Step 6: Final answer
x = 11,632,156.55
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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.