Finding the Fourth Proportional to 20,103,552.64, 27,759,657.52 and 18,644,749.12
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Solution
The fourth proportional to 20,103,552.64, 27,759,657.52 and 18,644,749.12 is: 25,745,292.85
Step by Step Solution
- Step 1: Write the proportion equation
20,103,552.64 : 27,759,657.52 = 18,644,749.12 : x - Step 2: Convert to fraction form
20,103,552.64/27,759,657.52 = 18,644,749.12/x - Step 3: Cross multiply
20,103,552.64x = 27,759,657.52 × 18,644,749.12 - Step 4: Simplify right side
20,103,552.64x = 517,571,850,117,521.38 - Step 5: Solve for x
x = 517,571,850,117,521.38/20,103,552.64 - Step 6: Final answer
x = 25,745,292.85
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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.