Finding the Fourth Proportional to 20,795,486.97, 28,695,562.68 and 11,501,580.18
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Solution
The fourth proportional to 20,795,486.97, 28,695,562.68 and 11,501,580.18 is: 15,870,958.71
Step by Step Solution
- Step 1: Write the proportion equation
20,795,486.97 : 28,695,562.68 = 11,501,580.18 : x - Step 2: Convert to fraction form
20,795,486.97/28,695,562.68 = 11,501,580.18/x - Step 3: Cross multiply
20,795,486.97x = 28,695,562.68 × 11,501,580.18 - Step 4: Simplify right side
20,795,486.97x = 330,044,314,974,235.69 - Step 5: Solve for x
x = 330,044,314,974,235.69/20,795,486.97 - Step 6: Final answer
x = 15,870,958.71
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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.