Finding the Fourth Proportional to 15,853,821.62, 21,878,385.81 and 8,610,477.62
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Solution
The fourth proportional to 15,853,821.62, 21,878,385.81 and 8,610,477.62 is: 11,882,519.93
Step by Step Solution
- Step 1: Write the proportion equation
15,853,821.62 : 21,878,385.81 = 8,610,477.62 : x - Step 2: Convert to fraction form
15,853,821.62/21,878,385.81 = 8,610,477.62/x - Step 3: Cross multiply
15,853,821.62x = 21,878,385.81 × 8,610,477.62 - Step 4: Simplify right side
15,853,821.62x = 188,383,351,378,730.53 - Step 5: Solve for x
x = 188,383,351,378,730.53/15,853,821.62 - Step 6: Final answer
x = 11,882,519.93
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1.5x scale
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.