Finding the Fourth Proportional to 13,143,208.11, 18,230,419.70 and 12,793,638.03
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Solution
The fourth proportional to 13,143,208.11, 18,230,419.70 and 12,793,638.03 is: 17,745,544.99
Step by Step Solution
- Step 1: Write the proportion equation
13,143,208.11 : 18,230,419.70 = 12,793,638.03 : x - Step 2: Convert to fraction form
13,143,208.11/18,230,419.70 = 12,793,638.03/x - Step 3: Cross multiply
13,143,208.11x = 18,230,419.70 × 12,793,638.03 - Step 4: Simplify right side
13,143,208.11x = 233,233,390,776,781.16 - Step 5: Solve for x
x = 233,233,390,776,781.16/13,143,208.11 - Step 6: Final answer
x = 17,745,544.99
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.