Finding the Fourth Proportional to 15,366,451.68, 21,205,696.32 and 8,490,873.60
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Solution
The fourth proportional to 15,366,451.68, 21,205,696.32 and 8,490,873.60 is: 11,717,401.70
Step by Step Solution
- Step 1: Write the proportion equation
15,366,451.68 : 21,205,696.32 = 8,490,873.60 : x - Step 2: Convert to fraction form
15,366,451.68/21,205,696.32 = 8,490,873.60/x - Step 3: Cross multiply
15,366,451.68x = 21,205,696.32 × 8,490,873.60 - Step 4: Simplify right side
15,366,451.68x = 180,054,887,053,105.16 - Step 5: Solve for x
x = 180,054,887,053,105.16/15,366,451.68 - Step 6: Final answer
x = 11,717,401.70
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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.