Finding the Fourth Proportional to 18,690,202.20, 28,005,122.70 and 10,579,056.60
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Solution
The fourth proportional to 18,690,202.20, 28,005,122.70 and 10,579,056.60 is: 15,851,502.03
Step by Step Solution
- Step 1: Write the proportion equation
18,690,202.20 : 28,005,122.70 = 10,579,056.60 : x - Step 2: Convert to fraction form
18,690,202.20/28,005,122.70 = 10,579,056.60/x - Step 3: Cross multiply
18,690,202.20x = 28,005,122.70 × 10,579,056.60 - Step 4: Simplify right side
18,690,202.20x = 296,267,778,133,244.81 - Step 5: Solve for x
x = 296,267,778,133,244.81/18,690,202.20 - Step 6: Final answer
x = 15,851,502.03
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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.