Finding the Fourth Proportional to 15,498,802.40, 21,388,013.68 and 8,972,707.68
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Solution
The fourth proportional to 15,498,802.40, 21,388,013.68 and 8,972,707.68 is: 12,382,143.45
Step by Step Solution
- Step 1: Write the proportion equation
15,498,802.40 : 21,388,013.68 = 8,972,707.68 : x - Step 2: Convert to fraction form
15,498,802.40/21,388,013.68 = 8,972,707.68/x - Step 3: Cross multiply
15,498,802.40x = 21,388,013.68 × 8,972,707.68 - Step 4: Simplify right side
15,498,802.40x = 191,908,394,606,481.06 - Step 5: Solve for x
x = 191,908,394,606,481.06/15,498,802.40 - Step 6: Final answer
x = 12,382,143.45
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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.