Finding the Fourth Proportional to 13,319,162.16, 18,380,460.05 and 7,207,590.66
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Solution
The fourth proportional to 13,319,162.16, 18,380,460.05 and 7,207,590.66 is: 9,946,483.91
Step by Step Solution
- Step 1: Write the proportion equation
13,319,162.16 : 18,380,460.05 = 7,207,590.66 : x - Step 2: Convert to fraction form
13,319,162.16/18,380,460.05 = 7,207,590.66/x - Step 3: Cross multiply
13,319,162.16x = 18,380,460.05 × 7,207,590.66 - Step 4: Simplify right side
13,319,162.16x = 132,478,832,182,883.14 - Step 5: Solve for x
x = 132,478,832,182,883.14/13,319,162.16 - Step 6: Final answer
x = 9,946,483.91
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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.