Finding the Fourth Proportional to 21,645,205.18, 29,862,072.51 and 12,353,291.53
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Solution
The fourth proportional to 21,645,205.18, 29,862,072.51 and 12,353,291.53 is: 17,042,799.29
Step by Step Solution
- Step 1: Write the proportion equation
21,645,205.18 : 29,862,072.51 = 12,353,291.53 : x - Step 2: Convert to fraction form
21,645,205.18/29,862,072.51 = 12,353,291.53/x - Step 3: Cross multiply
21,645,205.18x = 29,862,072.51 × 12,353,291.53 - Step 4: Simplify right side
21,645,205.18x = 368,894,887,406,028.81 - Step 5: Solve for x
x = 368,894,887,406,028.81/21,645,205.18 - Step 6: Final answer
x = 17,042,799.29
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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.