Finding the Fourth Proportional to 20,197,811.80, 30,307,215.30 and 8,839,408.60
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Solution
The fourth proportional to 20,197,811.80, 30,307,215.30 and 8,839,408.60 is: 13,263,707.09
Step by Step Solution
- Step 1: Write the proportion equation
20,197,811.80 : 30,307,215.30 = 8,839,408.60 : x - Step 2: Convert to fraction form
20,197,811.80/30,307,215.30 = 8,839,408.60/x - Step 3: Cross multiply
20,197,811.80x = 30,307,215.30 × 8,839,408.60 - Step 4: Simplify right side
20,197,811.80x = 267,897,859,564,871.56 - Step 5: Solve for x
x = 267,897,859,564,871.56/20,197,811.80 - Step 6: Final answer
x = 13,263,707.09
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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.