Finding the Fourth Proportional to 18,443,756.70, 27,665,635.05 and 17,912,315.70
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Solution
The fourth proportional to 18,443,756.70, 27,665,635.05 and 17,912,315.70 is: 26,868,473.55
Step by Step Solution
- Step 1: Write the proportion equation
18,443,756.70 : 27,665,635.05 = 17,912,315.70 : x - Step 2: Convert to fraction form
18,443,756.70/27,665,635.05 = 17,912,315.70/x - Step 3: Cross multiply
18,443,756.70x = 27,665,635.05 × 17,912,315.70 - Step 4: Simplify right side
18,443,756.70x = 495,555,589,056,585.25 - Step 5: Solve for x
x = 495,555,589,056,585.25/18,443,756.70 - Step 6: Final answer
x = 26,868,473.55
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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.