Finding the Fourth Proportional to 21,058,791.18, 29,058,460.41 and 12,353,787.60
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Solution
The fourth proportional to 21,058,791.18, 29,058,460.41 and 12,353,787.60 is: 17,046,659.75
Step by Step Solution
- Step 1: Write the proportion equation
21,058,791.18 : 29,058,460.41 = 12,353,787.60 : x - Step 2: Convert to fraction form
21,058,791.18/29,058,460.41 = 12,353,787.60/x - Step 3: Cross multiply
21,058,791.18x = 29,058,460.41 × 12,353,787.60 - Step 4: Simplify right side
21,058,791.18x = 358,982,047,888,148.94 - Step 5: Solve for x
x = 358,982,047,888,148.94/21,058,791.18 - Step 6: Final answer
x = 17,046,659.75
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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.