Finding the Fourth Proportional to 20,562,812.70, 28,377,810.99 and 11,395,258.62
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Solution
The fourth proportional to 20,562,812.70, 28,377,810.99 and 11,395,258.62 is: 15,726,082.81
Step by Step Solution
- Step 1: Write the proportion equation
20,562,812.70 : 28,377,810.99 = 11,395,258.62 : x - Step 2: Convert to fraction form
20,562,812.70/28,377,810.99 = 11,395,258.62/x - Step 3: Cross multiply
20,562,812.70x = 28,377,810.99 × 11,395,258.62 - Step 4: Simplify right side
20,562,812.70x = 323,372,495,300,528.19 - Step 5: Solve for x
x = 323,372,495,300,528.19/20,562,812.70 - Step 6: Final answer
x = 15,726,082.81
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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.