Finding the Fourth Proportional to 21,420,058.73, 29,558,851.99 and 11,630,278.85
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Solution
The fourth proportional to 21,420,058.73, 29,558,851.99 and 11,630,278.85 is: 16,049,334.67
Step by Step Solution
- Step 1: Write the proportion equation
21,420,058.73 : 29,558,851.99 = 11,630,278.85 : x - Step 2: Convert to fraction form
21,420,058.73/29,558,851.99 = 11,630,278.85/x - Step 3: Cross multiply
21,420,058.73x = 29,558,851.99 × 11,630,278.85 - Step 4: Simplify right side
21,420,058.73x = 343,777,691,129,577.38 - Step 5: Solve for x
x = 343,777,691,129,577.38/21,420,058.73 - Step 6: Final answer
x = 16,049,334.67
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1.5x scale
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.