Finding the Fourth Proportional to 10,651,976.70, 15,977,965.05 and 8,880,506.70
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Solution
The fourth proportional to 10,651,976.70, 15,977,965.05 and 8,880,506.70 is: 13,320,760.05
Step by Step Solution
- Step 1: Write the proportion equation
10,651,976.70 : 15,977,965.05 = 8,880,506.70 : x - Step 2: Convert to fraction form
10,651,976.70/15,977,965.05 = 8,880,506.70/x - Step 3: Cross multiply
10,651,976.70x = 15,977,965.05 × 8,880,506.70 - Step 4: Simplify right side
10,651,976.70x = 141,892,425,678,890.84 - Step 5: Solve for x
x = 141,892,425,678,890.84/10,651,976.70 - Step 6: Final answer
x = 13,320,760.05
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.