Finding the Fourth Proportional to 15,853,823.62, 21,878,388.57 and 8,610,479.62
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Solution
The fourth proportional to 15,853,823.62, 21,878,388.57 and 8,610,479.62 is: 11,882,522.69
Step by Step Solution
- Step 1: Write the proportion equation
15,853,823.62 : 21,878,388.57 = 8,610,479.62 : x - Step 2: Convert to fraction form
15,853,823.62/21,878,388.57 = 8,610,479.62/x - Step 3: Cross multiply
15,853,823.62x = 21,878,388.57 × 8,610,479.62 - Step 4: Simplify right side
15,853,823.62x = 188,383,418,900,425.94 - Step 5: Solve for x
x = 188,383,418,900,425.94/15,853,823.62 - Step 6: Final answer
x = 11,882,522.69
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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.