Finding the Fourth Proportional to 19,664,447.16, 27,121,553.82 and 12,791,124.12
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Solution
The fourth proportional to 19,664,447.16, 27,121,553.82 and 12,791,124.12 is: 17,641,744.94
Step by Step Solution
- Step 1: Write the proportion equation
19,664,447.16 : 27,121,553.82 = 12,791,124.12 : x - Step 2: Convert to fraction form
19,664,447.16/27,121,553.82 = 12,791,124.12/x - Step 3: Cross multiply
19,664,447.16x = 27,121,553.82 × 12,791,124.12 - Step 4: Simplify right side
19,664,447.16x = 346,915,161,238,880.12 - Step 5: Solve for x
x = 346,915,161,238,880.12/19,664,447.16 - Step 6: Final answer
x = 17,641,744.94
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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.