Finding the Fourth Proportional to 15,690,952.29, 21,652,961.87 and 8,626,494.09
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Solution
The fourth proportional to 15,690,952.29, 21,652,961.87 and 8,626,494.09 is: 11,904,258.21
Step by Step Solution
- Step 1: Write the proportion equation
15,690,952.29 : 21,652,961.87 = 8,626,494.09 : x - Step 2: Convert to fraction form
15,690,952.29/21,652,961.87 = 8,626,494.09/x - Step 3: Cross multiply
15,690,952.29x = 21,652,961.87 × 8,626,494.09 - Step 4: Simplify right side
15,690,952.29x = 186,789,147,602,550.34 - Step 5: Solve for x
x = 186,789,147,602,550.34/15,690,952.29 - Step 6: Final answer
x = 11,904,258.21
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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.