Finding the Fourth Proportional to 28,192,475,253,390, 38,905,617,720,572 and 15,691,937,026,021
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Solution
The fourth proportional to 28,192,475,253,390, 38,905,617,720,572 and 15,691,937,026,021 is: 21,654,874,137,248.82
Step by Step Solution
- Step 1: Write the proportion equation
28,192,475,253,390 : 38,905,617,720,572 = 15,691,937,026,021 : x - Step 2: Convert to fraction form
28,192,475,253,390/38,905,617,720,572 = 15,691,937,026,021/x - Step 3: Cross multiply
28,192,475,253,390x = 38,905,617,720,572 × 15,691,937,026,021 - Step 4: Simplify right side
28,192,475,253,390x = 610,504,503,229,662,527,829,835,776 - Step 5: Solve for x
x = 610,504,503,229,662,527,829,835,776/28,192,475,253,390 - Step 6: Final answer
x = 21,654,874,137,248.82
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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.