Finding the Fourth Proportional to 21,430,578.68, 29,574,175.60 and 11,641,030.19
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Solution
The fourth proportional to 21,430,578.68, 29,574,175.60 and 11,641,030.19 is: 16,064,609.18
Step by Step Solution
- Step 1: Write the proportion equation
21,430,578.68 : 29,574,175.60 = 11,641,030.19 : x - Step 2: Convert to fraction form
21,430,578.68/29,574,175.60 = 11,641,030.19/x - Step 3: Cross multiply
21,430,578.68x = 29,574,175.60 × 11,641,030.19 - Step 4: Simplify right side
21,430,578.68x = 344,273,871,003,961.38 - Step 5: Solve for x
x = 344,273,871,003,961.38/21,430,578.68 - Step 6: Final answer
x = 16,064,609.18
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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.