Finding the Fourth Proportional to 28,086,382.68, 38,760,405.12 and 15,696,475.75
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Solution
The fourth proportional to 28,086,382.68, 38,760,405.12 and 15,696,475.75 is: 21,661,805.51
Step by Step Solution
- Step 1: Write the proportion equation
28,086,382.68 : 38,760,405.12 = 15,696,475.75 : x - Step 2: Convert to fraction form
28,086,382.68/38,760,405.12 = 15,696,475.75/x - Step 3: Cross multiply
28,086,382.68x = 38,760,405.12 × 15,696,475.75 - Step 4: Simplify right side
28,086,382.68x = 608,401,759,026,255.75 - Step 5: Solve for x
x = 608,401,759,026,255.75/28,086,382.68 - Step 6: Final answer
x = 21,661,805.51
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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.