Finding the Fourth Proportional to 13,407,878.13, 18,501,364.50 and 7,900,895.49
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Solution
The fourth proportional to 13,407,878.13, 18,501,364.50 and 7,900,895.49 is: 10,902,347.55
Step by Step Solution
- Step 1: Write the proportion equation
13,407,878.13 : 18,501,364.50 = 7,900,895.49 : x - Step 2: Convert to fraction form
13,407,878.13/18,501,364.50 = 7,900,895.49/x - Step 3: Cross multiply
13,407,878.13x = 18,501,364.50 × 7,900,895.49 - Step 4: Simplify right side
13,407,878.13x = 146,177,347,336,896.09 - Step 5: Solve for x
x = 146,177,347,336,896.09/13,407,878.13 - Step 6: Final answer
x = 10,902,347.55
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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.