Finding the Fourth Proportional to 10,672,915.20, 14,718,672 and 9,880,281.60
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Solution
The fourth proportional to 10,672,915.20, 14,718,672 and 9,880,281.60 is: 13,625,576.65
Step by Step Solution
- Step 1: Write the proportion equation
10,672,915.20 : 14,718,672 = 9,880,281.60 : x - Step 2: Convert to fraction form
10,672,915.20/14,718,672 = 9,880,281.60/x - Step 3: Cross multiply
10,672,915.20x = 14,718,672 × 9,880,281.60 - Step 4: Simplify right side
10,672,915.20x = 145,424,624,138,035.19 - Step 5: Solve for x
x = 145,424,624,138,035.19/10,672,915.20 - Step 6: Final answer
x = 13,625,576.65
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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.