Finding the Fourth Proportional to 21,841,602.40, 32,787,286.80 and 12,871,208.80
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Solution
The fourth proportional to 21,841,602.40, 32,787,286.80 and 12,871,208.80 is: 19,321,476.82
Step by Step Solution
- Step 1: Write the proportion equation
21,841,602.40 : 32,787,286.80 = 12,871,208.80 : x - Step 2: Convert to fraction form
21,841,602.40/32,787,286.80 = 12,871,208.80/x - Step 3: Cross multiply
21,841,602.40x = 32,787,286.80 × 12,871,208.80 - Step 4: Simplify right side
21,841,602.40x = 422,012,014,388,283.88 - Step 5: Solve for x
x = 422,012,014,388,283.88/21,841,602.40 - Step 6: Final answer
x = 19,321,476.82
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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.