Finding the Fourth Proportional to 13,316,517.09, 18,377,315.10 and 7,515,501.48
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Solution
The fourth proportional to 13,316,517.09, 18,377,315.10 and 7,515,501.48 is: 10,371,686.37
Step by Step Solution
- Step 1: Write the proportion equation
13,316,517.09 : 18,377,315.10 = 7,515,501.48 : x - Step 2: Convert to fraction form
13,316,517.09/18,377,315.10 = 7,515,501.48/x - Step 3: Cross multiply
13,316,517.09x = 18,377,315.10 × 7,515,501.48 - Step 4: Simplify right side
13,316,517.09x = 138,114,738,832,476.38 - Step 5: Solve for x
x = 138,114,738,832,476.38/13,316,517.09 - Step 6: Final answer
x = 10,371,686.37
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.