Finding the Fourth Proportional to 21,841,631.40, 32,787,330.30 and 12,871,237.80
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Solution
The fourth proportional to 21,841,631.40, 32,787,330.30 and 12,871,237.80 is: 19,321,520.33
Step by Step Solution
- Step 1: Write the proportion equation
21,841,631.40 : 32,787,330.30 = 12,871,237.80 : x - Step 2: Convert to fraction form
21,841,631.40/32,787,330.30 = 12,871,237.80/x - Step 3: Cross multiply
21,841,631.40x = 32,787,330.30 × 12,871,237.80 - Step 4: Simplify right side
21,841,631.40x = 422,013,525,118,445.38 - Step 5: Solve for x
x = 422,013,525,118,445.38/21,841,631.40 - Step 6: Final answer
x = 19,321,520.33
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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.