Finding the Fourth Proportional to 15,336,899.68, 21,164,775.60 and 8,461,437.28
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Solution
The fourth proportional to 15,336,899.68, 21,164,775.60 and 8,461,437.28 is: 11,676,702.92
Step by Step Solution
- Step 1: Write the proportion equation
15,336,899.68 : 21,164,775.60 = 8,461,437.28 : x - Step 2: Convert to fraction form
15,336,899.68/21,164,775.60 = 8,461,437.28/x - Step 3: Cross multiply
15,336,899.68x = 21,164,775.60 × 8,461,437.28 - Step 4: Simplify right side
15,336,899.68x = 179,084,421,284,674.38 - Step 5: Solve for x
x = 179,084,421,284,674.38/15,336,899.68 - Step 6: Final answer
x = 11,676,702.92
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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.