Finding the Fourth Proportional to 13,291,388.13, 18,342,131.99 and 7,179,816.63
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Solution
The fourth proportional to 13,291,388.13, 18,342,131.99 and 7,179,816.63 is: 9,908,155.79
Step by Step Solution
- Step 1: Write the proportion equation
13,291,388.13 : 18,342,131.99 = 7,179,816.63 : x - Step 2: Convert to fraction form
13,291,388.13/18,342,131.99 = 7,179,816.63/x - Step 3: Cross multiply
13,291,388.13x = 18,342,131.99 × 7,179,816.63 - Step 4: Simplify right side
13,291,388.13x = 131,693,144,255,557.91 - Step 5: Solve for x
x = 131,693,144,255,557.91/13,291,388.13 - Step 6: Final answer
x = 9,908,155.79
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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.