Finding the Fourth Proportional to 13,169,866.20, 18,166,459.05 and 8,699,448.66
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Solution
The fourth proportional to 13,169,866.20, 18,166,459.05 and 8,699,448.66 is: 11,999,983.56
Step by Step Solution
- Step 1: Write the proportion equation
13,169,866.20 : 18,166,459.05 = 8,699,448.66 : x - Step 2: Convert to fraction form
13,169,866.20/18,166,459.05 = 8,699,448.66/x - Step 3: Cross multiply
13,169,866.20x = 18,166,459.05 × 8,699,448.66 - Step 4: Simplify right side
13,169,866.20x = 158,038,177,839,467.38 - Step 5: Solve for x
x = 158,038,177,839,467.38/13,169,866.20 - Step 6: Final answer
x = 11,999,983.56
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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.