Finding the Fourth Proportional to 14,689,442.76, 20,271,922.70 and 8,163,347.28
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Solution
The fourth proportional to 14,689,442.76, 20,271,922.70 and 8,163,347.28 is: 11,265,692.49
Step by Step Solution
- Step 1: Write the proportion equation
14,689,442.76 : 20,271,922.70 = 8,163,347.28 : x - Step 2: Convert to fraction form
14,689,442.76/20,271,922.70 = 8,163,347.28/x - Step 3: Cross multiply
14,689,442.76x = 20,271,922.70 × 8,163,347.28 - Step 4: Simplify right side
14,689,442.76x = 165,486,745,033,415.25 - Step 5: Solve for x
x = 165,486,745,033,415.25/14,689,442.76 - Step 6: Final answer
x = 11,265,692.49
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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.