Finding the Fourth Proportional to 13,319,992.16, 18,381,621.84 and 7,208,465.12
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Solution
The fourth proportional to 13,319,992.16, 18,381,621.84 and 7,208,465.12 is: 9,947,699.54
Step by Step Solution
- Step 1: Write the proportion equation
13,319,992.16 : 18,381,621.84 = 7,208,465.12 : x - Step 2: Convert to fraction form
13,319,992.16/18,381,621.84 = 7,208,465.12/x - Step 3: Cross multiply
13,319,992.16x = 18,381,621.84 × 7,208,465.12 - Step 4: Simplify right side
13,319,992.16x = 132,503,279,882,670.22 - Step 5: Solve for x
x = 132,503,279,882,670.22/13,319,992.16 - Step 6: Final answer
x = 9,947,699.54
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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.