Finding the Fourth Proportional to 15,784,612.30, 21,782,830.58 and 8,541,268.30
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Solution
The fourth proportional to 15,784,612.30, 21,782,830.58 and 8,541,268.30 is: 11,786,985.75
Step by Step Solution
- Step 1: Write the proportion equation
15,784,612.30 : 21,782,830.58 = 8,541,268.30 : x - Step 2: Convert to fraction form
15,784,612.30/21,782,830.58 = 8,541,268.30/x - Step 3: Cross multiply
15,784,612.30x = 21,782,830.58 × 8,541,268.30 - Step 4: Simplify right side
15,784,612.30x = 186,053,000,317,224.62 - Step 5: Solve for x
x = 186,053,000,317,224.62/15,784,612.30 - Step 6: Final answer
x = 11,786,985.75
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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.