Finding the Fourth Proportional to 13,472,427.20, 20,208,640.80 and 6,652,267.70
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Solution
The fourth proportional to 13,472,427.20, 20,208,640.80 and 6,652,267.70 is: 9,978,401.55
Step by Step Solution
- Step 1: Write the proportion equation
13,472,427.20 : 20,208,640.80 = 6,652,267.70 : x - Step 2: Convert to fraction form
13,472,427.20/20,208,640.80 = 6,652,267.70/x - Step 3: Cross multiply
13,472,427.20x = 20,208,640.80 × 6,652,267.70 - Step 4: Simplify right side
13,472,427.20x = 134,433,288,454,742.17 - Step 5: Solve for x
x = 134,433,288,454,742.17/13,472,427.20 - Step 6: Final answer
x = 9,978,401.55
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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.