Finding the Fourth Proportional to 19,201,638.84, 28,802,487.42 and 7,842,087.46
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Solution
The fourth proportional to 19,201,638.84, 28,802,487.42 and 7,842,087.46 is: 11,763,143.10
Step by Step Solution
- Step 1: Write the proportion equation
19,201,638.84 : 28,802,487.42 = 7,842,087.46 : x - Step 2: Convert to fraction form
19,201,638.84/28,802,487.42 = 7,842,087.46/x - Step 3: Cross multiply
19,201,638.84x = 28,802,487.42 × 7,842,087.46 - Step 4: Simplify right side
19,201,638.84x = 225,871,625,413,189.78 - Step 5: Solve for x
x = 225,871,625,413,189.78/19,201,638.84 - Step 6: Final answer
x = 11,763,143.10
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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.