Finding the Fourth Proportional to 10,938,690.20, 16,408,035.30 and 7,747,419.80
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Solution
The fourth proportional to 10,938,690.20, 16,408,035.30 and 7,747,419.80 is: 11,621,129.70
Step by Step Solution
- Step 1: Write the proportion equation
10,938,690.20 : 16,408,035.30 = 7,747,419.80 : x - Step 2: Convert to fraction form
10,938,690.20/16,408,035.30 = 7,747,419.80/x - Step 3: Cross multiply
10,938,690.20x = 16,408,035.30 × 7,747,419.80 - Step 4: Simplify right side
10,938,690.20x = 127,119,937,562,318.94 - Step 5: Solve for x
x = 127,119,937,562,318.94/10,938,690.20 - Step 6: Final answer
x = 11,621,129.70
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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.