Finding the Fourth Proportional to 15,370,915.91, 21,211,284.20 and 8,401,534.70
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Solution
The fourth proportional to 15,370,915.91, 21,211,284.20 and 8,401,534.70 is: 11,593,800.99
Step by Step Solution
- Step 1: Write the proportion equation
15,370,915.91 : 21,211,284.20 = 8,401,534.70 : x - Step 2: Convert to fraction form
15,370,915.91/21,211,284.20 = 8,401,534.70/x - Step 3: Cross multiply
15,370,915.91x = 21,211,284.20 × 8,401,534.70 - Step 4: Simplify right side
15,370,915.91x = 178,207,340,089,797.66 - Step 5: Solve for x
x = 178,207,340,089,797.66/15,370,915.91 - Step 6: Final answer
x = 11,593,800.99
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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.