Finding the Fourth Proportional to 28,748,010.78, 39,671,648.64 and 15,694,638.84
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Solution
The fourth proportional to 28,748,010.78, 39,671,648.64 and 15,694,638.84 is: 21,658,270.63
Step by Step Solution
- Step 1: Write the proportion equation
28,748,010.78 : 39,671,648.64 = 15,694,638.84 : x - Step 2: Convert to fraction form
28,748,010.78/39,671,648.64 = 15,694,638.84/x - Step 3: Cross multiply
28,748,010.78x = 39,671,648.64 × 15,694,638.84 - Step 4: Simplify right side
28,748,010.78x = 622,632,197,592,177.12 - Step 5: Solve for x
x = 622,632,197,592,177.12/28,748,010.78 - Step 6: Final answer
x = 21,658,270.63
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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.