Finding the Fourth Proportional to 20,871,112.79, 31,306,910.21 and 6,298,158.55
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Solution
The fourth proportional to 20,871,112.79, 31,306,910.21 and 6,298,158.55 is: 9,447,310.56
Step by Step Solution
- Step 1: Write the proportion equation
20,871,112.79 : 31,306,910.21 = 6,298,158.55 : x - Step 2: Convert to fraction form
20,871,112.79/31,306,910.21 = 6,298,158.55/x - Step 3: Cross multiply
20,871,112.79x = 31,306,910.21 × 6,298,158.55 - Step 4: Simplify right side
20,871,112.79x = 197,175,884,243,190.19 - Step 5: Solve for x
x = 197,175,884,243,190.19/20,871,112.79 - Step 6: Final answer
x = 9,447,310.56
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.