Finding the Fourth Proportional to 15,936,466.95, 21,989,580.71 and 8,966,177.19
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Solution
The fourth proportional to 15,936,466.95, 21,989,580.71 and 8,966,177.19 is: 12,371,780.87
Step by Step Solution
- Step 1: Write the proportion equation
15,936,466.95 : 21,989,580.71 = 8,966,177.19 : x - Step 2: Convert to fraction form
15,936,466.95/21,989,580.71 = 8,966,177.19/x - Step 3: Cross multiply
15,936,466.95x = 21,989,580.71 × 8,966,177.19 - Step 4: Simplify right side
15,936,466.95x = 197,162,476,979,666 - Step 5: Solve for x
x = 197,162,476,979,666/15,936,466.95 - Step 6: Final answer
x = 12,371,780.87
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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.