Finding the Fourth Proportional to 15,287,924.48, 21,096,698.65 and 8,318,629.40
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Solution
The fourth proportional to 15,287,924.48, 21,096,698.65 and 8,318,629.40 is: 11,479,361.89
Step by Step Solution
- Step 1: Write the proportion equation
15,287,924.48 : 21,096,698.65 = 8,318,629.40 : x - Step 2: Convert to fraction form
15,287,924.48/21,096,698.65 = 8,318,629.40/x - Step 3: Cross multiply
15,287,924.48x = 21,096,698.65 × 8,318,629.40 - Step 4: Simplify right side
15,287,924.48x = 175,495,617,632,830.31 - Step 5: Solve for x
x = 175,495,617,632,830.31/15,287,924.48 - Step 6: Final answer
x = 11,479,361.89
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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.