Finding the Fourth Proportional to 13,127,290.70, 18,117,487.04 and 7,326,446.10
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Solution
The fourth proportional to 13,127,290.70, 18,117,487.04 and 7,326,446.10 is: 10,111,514.65
Step by Step Solution
- Step 1: Write the proportion equation
13,127,290.70 : 18,117,487.04 = 7,326,446.10 : x - Step 2: Convert to fraction form
13,127,290.70/18,117,487.04 = 7,326,446.10/x - Step 3: Cross multiply
13,127,290.70x = 18,117,487.04 × 7,326,446.10 - Step 4: Simplify right side
13,127,290.70x = 132,736,792,229,376.31 - Step 5: Solve for x
x = 132,736,792,229,376.31/13,127,290.70 - Step 6: Final answer
x = 10,111,514.65
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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.