Finding the Fourth Proportional to 28,586,938.86, 39,449,945.34 and 15,534,166.68
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Solution
The fourth proportional to 28,586,938.86, 39,449,945.34 and 15,534,166.68 is: 21,437,133.56
Step by Step Solution
- Step 1: Write the proportion equation
28,586,938.86 : 39,449,945.34 = 15,534,166.68 : x - Step 2: Convert to fraction form
28,586,938.86/39,449,945.34 = 15,534,166.68/x - Step 3: Cross multiply
28,586,938.86x = 39,449,945.34 × 15,534,166.68 - Step 4: Simplify right side
28,586,938.86x = 612,822,026,428,449.38 - Step 5: Solve for x
x = 612,822,026,428,449.38/28,586,938.86 - Step 6: Final answer
x = 21,437,133.56
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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.