Finding the Fourth Proportional to 21,420,505.82, 29,559,490.80 and 11,630,738.36
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Solution
The fourth proportional to 21,420,505.82, 29,559,490.80 and 11,630,738.36 is: 16,049,980.63
Step by Step Solution
- Step 1: Write the proportion equation
21,420,505.82 : 29,559,490.80 = 11,630,738.36 : x - Step 2: Convert to fraction form
21,420,505.82/29,559,490.80 = 11,630,738.36/x - Step 3: Cross multiply
21,420,505.82x = 29,559,490.80 × 11,630,738.36 - Step 4: Simplify right side
21,420,505.82x = 343,798,703,549,627.06 - Step 5: Solve for x
x = 343,798,703,549,627.06/21,420,505.82 - Step 6: Final answer
x = 16,049,980.63
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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.