Finding the Fourth Proportional to 21,555,258.37, 29,741,816.06 and 12,386,129.65
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Solution
The fourth proportional to 21,555,258.37, 29,741,816.06 and 12,386,129.65 is: 17,090,307.31
Step by Step Solution
- Step 1: Write the proportion equation
21,555,258.37 : 29,741,816.06 = 12,386,129.65 : x - Step 2: Convert to fraction form
21,555,258.37/29,741,816.06 = 12,386,129.65/x - Step 3: Cross multiply
21,555,258.37x = 29,741,816.06 × 12,386,129.65 - Step 4: Simplify right side
21,555,258.37x = 368,385,989,745,612.19 - Step 5: Solve for x
x = 368,385,989,745,612.19/21,555,258.37 - Step 6: Final answer
x = 17,090,307.31
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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.